cccc cccp cccu ccgc ccoc ccpp ccpr ccrc ccrg ccrp ccuc ccup cgcc cgcg cgro coco cocp cocu cogo coop copg copo copp copr cor- corc corg coro corp corr coup cour cpcu crcc crcr croc croo crop cror crpc crug crup cucc cupo cupp cupr curo curr gc-c gccc gcpc gcrg gggg ggpo gocr gogo goog goop goor gopc gopo gopu gorg goro gorp gorr gou- goug goup gour gpgp gprp grcc groc grog groo grop gror grou grpc grrr grug grur gugg gugu gurg guro gurr guru occc ocpp ocro ocrr ocur ogog ogou ogpu ogro oocr oooo opo- opor oppo orco orgo oro- oror orpc orro orup oucc our- ouro ouu- pccc pcgg pcpp pcrc pgcc pgou pgpu pgrc pgup poco pogg pogo poop poor pop- popc popo popp porc porg poro porr poup pour ppcc pppo pppp pprc ppru ppur prcc prcp pro- proc prog proo prop prou pruu pugo pugu pupu pur- purg puro purp purr puru puuc rccc rcgc rcpo rcrg rocc roco rogg rogo roog roop roor ropo rorc roro roru roup rrrr rugg rupp rurc ruro rurp ruru u-rp uccp ucrc ugcc ugcg uggo ugro ugur uguu uocc uor- upgo upor uppc uppp uppu upup urgu uro- uroo urpo urup urur uucp uuoc uuuu