ref: c3eea8755d4adbf3dc4cb9bda166a9e02c2064b5 dir: /test/t.pp1/
/bwk/,/bwk/ { print $2, $1 } /ava/,/ava/ { print $2, $1 } /pjw/,/pjw/ { print $2, $1 }