cccc cccp ccee cche cchp ccoc ccpe ccpp cec- cece ceco cecp ceec ceop cepc cepe ceph cepo cepp chce chch chcp chec chee cheh chep choc choh choo chop chpp coce coch coco cocp coep coho cooh coop cope coph copo copp cpce cpep eccc ecce ecco eche echo eco- ecop ecpp eeee eeoc ehcc eheh epcc epch epec epee eph- epoc eppc eppo eppp hccc hcch hcpc hech heep hehe heho hepc hepe hepp hhhh hhpc hoce hoch hohe hoho hooe hoop hope hopo hopp hpcc hppe o-eo occc oce ocee oche ocpp oec- oecc oeec ohcc ohee ohho ohoh ooho oooh oooo opec opep opo- oppo pccc pcce pcep pchp pcoe pcpp pece pech peco peec peep pehe peho pepe pepo phcc phe- phoh phoo poce poch poco pooh poop pop- popc pope popo popp ppcc pppo pppp