# code: http://golf.shinh.org/reveal.rb?Casual+Quaternions/tails_1643879728&nbb
# target Nibbles version: 0.23
# commenter version: 0.1.2.181

= #(subscript (wrapped)):chr 
    / #(foldr1):chr 
        | #(filter):[chr] 
            fstLine #(@):[chr] 
            \A 
            \ #(char class):[chr] 
                A #($):chr 
                a #(isAlpha):null 
        \C B 
        `^ #(bit xor):int 
            B #(@):chr 
            C #($):chr 
    "ijk1" #(string):[chr]