c-p-c c-pop ccccc cnnnn co-co co-np co-op cocc- cocco cocon conco connu cono- conon conop coppo couco cunco cuoco cupon n-p-n nnooo no-no no-op non-u nonno nonop nonpc noonu nopun nu-nu nunon nunun onco- onoon onpop ooooo opcon oppon p-n-p po-on po-po pocno pocop ponnu ponup poopo popco popon popop poppo popup punon puppo u-con u-pop uconn uncon uncup unnun uppon uuuuu