c-p-c c-pop ccccc cloop cnnnn co-co co-np co-op cocc- cocco cocol cocon coll- collo colo- colon colop colp- colpo concl conco cono- conon conop coolo coppo cozzo l-pop loco- locon lollo lolol lonco lonzo loopz lopon lozno lozon n-p-n nnooo no-no no-op nonno nonop nonpc nozno ocllo ollon onco- oncol onoon onpop ooooo opcon oploo oppol oppon oznoz ozon- ozono p-n-p ploop plopp po-on po-po pocno pocol pocop polco pollo polon polop polzl ponzo poopo popco popon popop poppo pozol pozzo zcolo zocco zolcz zollo zolno zono- zoppo zzzzz