36 
    0     0
    0   5000
    0  10000
    0  15000
    0  20000
    0  25000
 5000      0
 5000   5000
 5000  10000
 5000  15000
 5000  20000
 5000  25000
10000      0
10000   5000
10000  10000
10000  15000
10000  20000
10000  25000
15000      0
15000   5000
15000  10000
15000  15000
15000  20000
15000  25000
20000      0
20000   5000
20000  10000
20000  15000
20000  20000
20000  25000
25000      0
25000   5000
25000  10000
25000  15000
25000  20000
25000  25000
