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use strict; use warnings; ... printf "%s\t%s\t%s\t%s\n", $line[0], $lookup{$line[1]}, $line[2], +$line[3]; }
23 xxxxxxxx 0 2713391 24 xxxxxxxx 0 2713391 25 rs987435 0 1111111 26 rs000001 0 2222222