4GerardHuetletchangeLocptLoctpInsertiontotheleftortotherightisnaturalandcheapletinsertrightLoctprmatchpwithTopfailwithinsertoftopNodeleftuprightLoctNodeleftuprri ID: 221356
4GerardHuetletchange(Loc(_ p))t=Loc(t p);;Insertiontotheleftortotherightisnaturalandcheap.letinsert_right(Loc(t