# code: http://golf.shinh.org/reveal.rb?Digit+depth/tails_1644225874&nbb
# target Nibbles version: 0.23
# commenter version: 0.1.2.181

#(implicit map):[chr] 
    `\ #(special scans):[[chr]] 
        @ #(= fstLine):[chr] 
        ; #(foldop: rev cons):null 
    - #(subtract):chr <--arg( B:[chr] A:[chr] ) 
        ; #(save):chr -->let( E:chr ) 
            / #(foldr1):chr 
                $ #(= B):[chr] 
                $ #(= D):chr <--arg( D:chr C:chr ) 
        * #(multiply):int 
            + #(sum):int 
                . #(map):[int] 
                    @ #(= B):[chr] 
                    - #(subtract):int <--arg( F:chr ) 
                        % #(modulus):int 
                            + #(add):chr 
                                $ #(= F):chr 
                                ~ #(auto = 1):auto 
                            3 #(integer):int 
                        ~ #(auto = 1):auto 
            , #(length):int 
                \ #(char class):[chr] 
                    $ #(= E):chr 
                    d #(isDigit):null