# code: http://golf.shinh.org/reveal.rb?Updown+numbers/tails+%28darrenks%29_1646895581&nbb
# target Nibbles version: 0.25
# commenter version: 0.1.2.181

= #(subscript (wrapped)):[int] 
    40 #(integer):int 
    =~ #(group by (also sorts)):[[int]] 
        , #(range from 1):[int] 
            ^ #(pow):int 
                ~ #(auto = 10):auto 
                5 #(integer):int 
        ~ #(nosort):null 
        \A 
        . #(map):[int] 
            `= #(chunk by):[[int]] 
                ! #(zip with):[int] 
                    ; #(save):[chr] 
                        `p #(int to str):[chr] 
                            A #($):int 
                    sets B 
                    \C 
                    >> #(tail):[chr] 
                        B #(@):[chr] 
                    - #(zipop: sub):null 
                \D 
                D #($):int 
            \E 
            / #(foldr1):int 
                #(implicit arg = E):[int] 
                #\G F 
                #(implicit arg = G):int