cccc cccl cccu ccgc cclc cclg ccoc ccrc ccrg ccrl ccuc cgcc cgcg cgro clog cloo clor clou clro coco cocu cogo col- coll colo colu cool cor- corc corg corl coro corr coul cour crcc crcr croc crol croo cror crug cucc culc cull culo curl curo curr gc-c gccc gclc gcrg ggcl gggg glcc glog glor glou glro glug glur gocr gogo goll golo golu goog gool goor gorg goro gorr gou- goug goul gour grcc groc grog grol groo gror grou grrl grrr grug grur gugg gugu gull gulo gulu gurg gurl guro gurr guru lccc lcor lcrg lcrl llcc llgc lllc llll lloc lloo locc loco locu log- logo loll lolo looc lool loor loro loul lour louu lroc lrrc lrrr lugg lugo lugu lull lulu lurg occc oclc ocrl ocro ocrr ocul ocur ogog ogou ogro olcc olgc olgr ollo olog olor olur oocr oolo oooo orco orgo orlo orlu oro- oror orro oucc oulu our- ouro ouu- rccc rcgc rcrg rlcg rlug rocc roco rogg rogo roll rolo roog rool roor rorc roro roru roul rrrr rugg rull rulo rurc ruro ruru ucrc ugcc ugcg uggo ugol ugro ugur uguu ulcc ulco ullo ullr ulo- uloc ulog ulul uocc uolc uor- urgu uro- urol uroo urur uulu uuoc uuuu