ref: 8e3c92b4eae6ff958d8af946caf6fb7d7f3bfbf7 dir: /test/t.cat/
{print $2 " " $1} {print $1 " " "is", $2} {print $2 FS "is" FS $1} {print length($1 $2), length($1) + length($2)}