--[[
AAAABBBBAAAABBBBAAAA
AAAABBBBAAAEBBBBAAAA
AAAABBBBAAAAEBBBAAAA
AAAABBBBAAAABBBBAAAA
CCCCDDEDCCCCDDDDCCCC
CCCCDDDECCCCDDDDCCCC
CCCCDDDDCCCCDDDDCCCC
CCCCDDDDCCCCDDDDCCCC
AAAABBBBAEAABBBBAAAA
AAAABBBBEAAABBBBAAAA
AAAABBBBAAAABBBBAAAA
AAAABBBBAAAABBBBAAAA
CCCCDDDDCCCCDDDDCCCC
CCCCDDDDCCECDDDDCCCC
CCCCDDDDCCCEDDDDCCCC
CCCCDDDDCCCCEDDDCCCC
AAAABEBBAAAABBBBAAAA
AAAAEBBBAAAABBBBAAAA
AAAEBBBBAAAABBBBAAAA
AAAABBBBAAAABBBBAAAA
00000000000000000000
00000000000000000100
00000000000000000000
00000000000000000000
00000000000000000000
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01110000000000000000
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00220000000000000000
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00000000000000022200
00000000000000000000
00000000000000000000
]]
tableau.t = 50000