# code: http://golf.shinh.org/reveal.rb?alternating+case+lines/tails_1645795701&nbb
# target Nibbles version: 0.25
# commenter version: 0.1.6.187

! #(zip with):[int] 
    sndLine #(;;@):[chr] 
    \A 
    , #(range from 1):[int] 
        ~ #(auto = infinity):auto 
    ~ #(zipop: by):null 
    \C B 
    % #(modulus):int 
        C #($):chr 
        ? #(if/else):chr 
            % #(modulus):int 
                fstInt #(_):int 
                ~ #(auto = 2):auto 
            \D 
            `) #(to uppercase):chr 
                C #(@):chr 
            `( #(to lowercase):chr 
                C #($):chr