ref: 96c2be96e4beaac08d89af4dea8069d9ca1c4b09 dir: /test/t.pp1/
/bwk/,/bwk/ { print $2, $1 } /ava/,/ava/ { print $2, $1 } /pjw/,/pjw/ { print $2, $1 }