# code: http://golf.shinh.org/reveal.rb?81+digit+number/tails_1701234364&nbb
# target Nibbles version: 1.00
# commenter version: 0.1.2.181

+ #(concat):[chr] 
    : #(append):[[chr]] 
        ; #(save):[[chr]] 
            `\ #(special scans):[[chr]] 
                >> #(tail):[chr] 
                    | #(filter):[chr] 
                        fstLine #(@):[chr] 
                        \A 
                        \ #(char class):[chr] 
                            A #($):chr 
                            d #(isDigit):null 
                : #(foldop: cons):null 
        sets B 
        >> #(tail):[[chr]] 
            \ #(reverse):[[chr]] 
                #(implicit arg = B):[[chr]]