--[[
AAAABBBBAAAABBBBAAAA
AAAABBBBAAAABBBBAAAA
AAAABBBBAAAABBBBAAAA
AAAABBBBAAAABBBBAAAA
CCCCDDDDCCCCDDDDCCCC
CCCCDDDDCCCCDDDDCCCC
CCCCDDDDCCCCDDDDCCCC
CCCCDDDDCCCCDDDDCCCC
AAAABBBBAAAABBBBAAAA
AAAABBBBAAEEEEEEEEEE
EEEEEEEEAAAABBBBAAAA
AAAABBBBAAAABBBBAAAA
CCCCDDDDCCCCDDDDCCCC
CCCCDDDDCCCCDDDDCCCC
CCCCDDDDCCCCDDDDCCCC
CCCCDDDDCCCCDDDDCCCC
AAAABBBBAAAABBBBAAAA
AAAABBBBAAAABBBBAAAA
AAAABBBBAAAABBBBAAAA
AAAABBBBAAAABBBBAAAA
00000000000000000000
00000000000000000000
00000000021200000000
00000000000000000000
00000000000000000000
00000000000000000000
00000000000000000000
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00000000000000000000
]]
tableau.t = 50000