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my @row = ( 'col1:line1 ... col6:line3 col6:line4' );
col1:line1|col2:line1|col3:line1|col4:line1|col5:line1|col6:line1 col2:line2| | | |col5:line2|col6:line2 | | | | |col6:line3 | | | | |col6:line4