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C:\test>215606 No 2-column solutions found There are 1956 3-column solutions C:\test>
#! perl -slw use strict; ... 0 0 0 1 1 1 0 0 1 1 1 0 0 0 1 1 1 0 0 0 1 1 1 0 1 1 1 1 1 1 0 0 0 1 0 1 1 1 1 1 1 1 1 1 0 1 1 0 1 1 1 1 1 1 0 0 1 1 1 0 1 0 0