ref: 7e6d7d36f83f05f372cfbce43534a2747bfc39c3 dir: /test/t.pp1/
/bwk/,/bwk/ { print $2, $1 } /ava/,/ava/ { print $2, $1 } /pjw/,/pjw/ { print $2, $1 }