c-cor c-p-c c-pop ccccc ccrcl cctrl cloop cloor cloot clort co-co co-op cocc- cocco cocol cocto coll- collo colo- colop color colp- colpo coolo coopt coppo copr- copro copto coro- corol corop corot corrl corto cott- cotto cpctc croco croll crool croop croot cropc cropo crott ctrlc ctrol l-pop loco- locro lollo lolol loopt lotor lotto ltcol ocllo octo- octol octor ooooo oploo oplot oppol opto- optot optto orcop orlop oroco ortoo otolo ototo otpor pctct ploop ploot plopp plott po-po pocol pocop polco pollo polop poopo poort popco poplr popop poppo porco poro- porro porto potco potoc potoo potop potor potro potto proll prolo proor proot prop- propl propp propr propt prot- proto prtor ptprc ptpro ptprr ptprt r-co- rcolo ro-ro rocco rocor rollc rollo roto- rotol rotor rotot rotto rprop rptor t-pop t-top tocco toco- tollo toloo tolor toolt toplo topo- topol topor topot toppo topto torpo torro torto toto- totoo totop tprot troco troll troop trop- tropo trott ttttt