# code: http://golf.shinh.org/reveal.rb?Disagree/darrenks_1640230667&nbb
# target Nibbles version: 0.2
# commenter version: 0.1.2.181

`^ #(list xor):[chr] 
    "yesno" #(string):[chr] 
    \A 
    fstLine #(_):[chr]