<hppavilion[1]> le/rn Russell\'s Teapot//Russell\'s little Teapot / Short and stout / Orbits near Mars / Or thereabout. / If you see it / Let us know / If you don\'t / What does that show?

#!/bin/bash
declare {{a..h},{j..t}}="$((i++))" letters=({{a..h},{j..t}}); while read -r; do echo "${letters[18-${REPLY:0:1}]}$((20-${REPLY:1}))"; done