c-p-c c-pop ccccc co-co co-op cocc- cocco cocom cocto comco commo comot compo coopt coppo copto cott- cotto cpctc mccoo mmccc mmmcc mmmmm mocco momot mooto moto- motoc motto mt-tc mt-tm mt-tp mt-tt mtoto octo- omoto ooooo opto- optot optto otomo ototo ottom p-com pctct po-po pocop poopo popco popop poppo potco potoc potom potoo potop potto t-pop t-top tcpmp tocco toco- tommo tomo- tomom topo- topot toppo topto toto- totoo totop ttttt