# code: http://golf.shinh.org/reveal.rb?Almost+Anagram/tails_1643950358&nbb
# target Nibbles version: 0.23
# commenter version: 0.1.2.181

/ #(foldr1):[chr] 
    % #(split (remove empties)):[[chr]] 
        fstLine #(@):[chr] 
        ~ #(auto = words):auto 
    \B A 
    - #(diff):[chr] 
        #(implicit arg = B):[chr] 
        #(implicit arg = A):[chr]