def keep.two
import bend-kit-multipart@0.3.0.0/multipart.bend as Multipartimport Base
import bend-kit-bytes@0.3.3.0/bytes.bend as Bytes
343def keep.two(+cut: U32, +k: U32, r: Bytes.Bytes & Bytes.Bytes) -> Bytes.Bytes & Bytes.Bytes:
344 (b, h) = r
345 (h, Bytes.snd(Bytes.slice(b, cut, k)))