# code: http://golf.shinh.org/reveal.rb?rad+math/tails_1673166066&nbb
# target Nibbles version: 1.00
# commenter version: 0.1.2.181

/ #(foldr1):[chr] 
    % #(split (remove empties)):[[chr]] 
        . #(map):[chr] 
            `\ #(special scans):[int] 
                + #(add):[chr] 
                    4 #(integer):int 
                    @ #(= fstLine):[chr] 
                + #(foldop: add):null 
            = #(subscript (wrapped)):chr <--arg( A:int ) 
                $ #(= A):int 
                " 54321*0" #(string):[chr] 
        ~ #(auto = words):auto 
    #(implicit arg = C):[chr] <--arg( C:[chr] B:[chr] )