Mine
public text v1 · immutable(cond
[(null? s) '()]
[(null? (rest s)) '()]
[(null? (rest (rest s))) '()]
[else (cons (first s)
(cons (first (rest s))
(cons (first (rest (rest s))) '() )))])(cond
[(null? s) '()]
[(null? (rest s)) '()]
[(null? (rest (rest s))) '()]
[else (cons (first s)
(cons (first (rest s))
(cons (first (rest (rest s))) '() )))])