def suffix
import bend-collections@1.0.0.0/spec/crypto/poly1305.bend as Poly1305import Base
70def suffix(n: Nat, xs: List<&2, U32>) -> List<&2, U32>:
71 match n xs:
72 case 0n _: xs
73 case 1n+k Nil{}: Nil{}
74 case 1n+k x <> rest: suffix(k, rest)