00  01  02  03  04  05  06  07  08  09  10  11  12  13  14  15  16  17  18  19   
                                                                                       
                                                                                       
00                                                                                   00
                                                                                       
                                                                                       
                                                                                       
01                                                                                   01
                                                                                       
                                                                                       
                                                                                       
02                                                                                   02
                                                                                       
                                                                                       
                                                                                       
03                                                                                   03
                                                                                       
                       #####                                                           
                       #...#                                                           
04                     #TPT#                                                         04
                       #...#                                                           
                       #####                                                           
                                                                                       
05                                                                                   05
                                                                                       
                                                                                       
                                                                                       
06                                                                                   06
                                                                                       
                                                                                       
                                                                                       
07                                                                                   07
                                                                                       
                                                                                       
                                                                                       
08                                                                                   08
                                                                                       
                                               #####                                   
                                               #...#                                   
09                                             #RCK#                                 09
                                               #...#                                   
               #####                           #...#                                   
               #...#                           #...#                                   
10             #PIT#                           #EXC#                                 10
               #...#                           #...#                                   
               #####                           #####                                   
                                                                                       
11                                                                                   11
                                                                                       
                                                                                       
                                                                                       
12                                                                                   12
                                                                                       
                                                                                       
                                                                                       
13                                                                                   13
                                                                                       
                                                                                       
                                                                                       
14                                                                                   14
                                                                                       
                                                                                       
                                                                                       
15                                                                                   15
                                                                                       
                                                                                       
                                                                                       
16                                                                                   16
                                                                                       
                                                                                       
                                                                                       
17                                                                                   17
                                                                                       
                                                                                       
                                                                                       
18                                                                                   18
                                                                                       
               #####                                                                   
               #...#                                                                   
19             #\ /#                                                                 19
               #...#                                                                   
               #####                                                                   
     00  01  02  03  04  05  06  07  08  09  10  11  12  13  14  15  16  17  18  19