c-- ccc cck ccm ccr ccs cct ccu ckc ckm cks ckt cmc cmk cmm cmr cms cmt cmu crc crk crm crr crs crt cru csc csk csm csr css cst csu ctc ctk ctm ctr cts ctt ctu cuc cuk cum cur cus cut cuu k-t kcc kck kcm kcr kcs kct kcu kkc kkk kkm kkr kks kkt kku kmc kmk kmm kms kmt kmu krc krk krr krs krt kru ksc ksk ksm ksr kss kst ksu ktc ktk ktm ktr kts ktt ktu kuc kuk kum kur kus kut kuu m-r mc- mcc mck mcm mcr mcs mct mcu mkc mkk mkm mkr mks mkt mku mmc mmk mmm mmr mms mmt mmu mrc mrk mrm mrr mrs mrt mru msc msk msm msr mss mst msu mtc mtk mtm mtr mts mtt mtu muc muk mum mur mus mut muu rcc rcm rcr rcs rct rcu rkc rkk rkm rks rkt rku rmc rmm rmr rms rmt rrc rrk rrm rrr rrs rrt rru rsc rsk rsm rsr rss rst rsu rtc rtk rtm rtr rts rtt rtu ruc ruk rum rur rus rut ruu scc sck scm scr scs sct scu sk- skc skk skm skr sks skt sku smc smk smm smr sms smt smu sr- src srk srm srr srs srt ss- ssc ssk ssm ssr sss sst ssu stc stk stm str sts stt stu suc suk sum sur sus sut suu tcc tck tcm tcr tcs tct tcu tkc tkk tkm tkr tks tkt tmc tmk tmm tmr tms tmt tmu trc trk trm trr trs trt tru tsc tsk tsm tsr tss tst tsu ttc ttk ttm ttr tts ttt ttu tuc tuk tum tur tus tut tuu ucc uck ucm ucr ucs uct ucu ukc ukk ukr uku um- umc umm umr ums umt umu ur- urc urk urm urr urs urt uru usc usk usm usr uss ust usu utc utk utm utr uts utt utu uuc uum uur uus uut uuu