c-- ccc cck ccl ccr ccu ckc cl- clc clk cll clr clu crc crk crl crr cru cuc cuk cul cur cuu kcc kck kcl kcr kcu kkc kkk kkl kkr kku kl- klc klr klu krc krk krl krr kru kuc kuk kul kur kuu lcc lck lcl lcr lcu lkl lkr llc llk lll llr llu lrc lrk lrr lru luc luk lul lur luu rcc rcl rcr rcu rkc rkk rku rlc rll rlr rlu rrc rrk rrl rrr rru ruc ruk rur ruu ucc uck ucl ucr ucu ukc ukk ukl ukr uku ulc ulk ull ulr ulu ur- urc urk url urr uru uuc uur uuu