ref: 279f78a86cbff3f526fe1a1debd4d4f5766f96b0 dir: /test/t.pp1/
/bwk/,/bwk/ { print $2, $1 } /ava/,/ava/ { print $2, $1 } /pjw/,/pjw/ { print $2, $1 }