c-- ccc cck ccn ccr ccs cct ccu ckc cks ckt cn- cnc cnn cnr cns cnt cnu crc crk crn crr crs crt cru csc csk csn csr css cst csu ctc ctk ctn ctr cts ctt ctu cuc cuk cun cur cus cut cuu k-t kcc kck kcn kcr kcs kct kcu kkc kkk kkn kkr kks kkt kku kn- knc knk knn knr knt knu krc krk krn krr krs krt kru ksc ksk ksn ksr kss kst ksu ktc ktk ktn ktr kts ktt ktu kuc kuk kun kur kus kut kuu ncc nck ncn ncr ncs nct ncu nkc nkk nkn nkr nks nkt nku nnc nnk nnn nns nnt nnu nrc nrk nrn nrr nrs nrt nru nsc nsk nsn nsr nss nst nsu ntc ntk ntn ntr nts ntt ntu nuc nuk nun nur nus nut nuu rcc rcn rcr rcs rct rcu rkc rkk rks rkt rku rnc rnn rnr rns rnt rnu rrc rrk rrn rrr rrs rrt rru rsc rsk rsn rsr rss rst rsu rtc rtk rtn rtr rts rtt rtu ruc ruk run rur rus rut ruu scc sck scn scr scs sct scu sk- skc skk skr sks skt sku snc snk snn snr sns snt snu sr- src srk srn srr srs srt ss- ssc ssk ssn ssr sss sst ssu stc stk stn str sts stt stu suc suk sun sur sus sut suu tcc tck tcn tcr tcs tct tcu tkc tkk tkr tks tkt tnc tnk tnn tnr tns tnt trc trk trn trr trs trt tru tsc tsk tsn tsr tss tst tsu ttc ttk ttn ttr tts ttt ttu tuc tuk tun tur tus tut tuu ucc uck ucn ucr ucs uct ucu ukc ukk ukn ukr uku un- unc unk unn unr uns unt unu ur- urc urk urn urr urs urt uru usc usk usn usr uss ust usu utc utk utn utr uts utt utu uuc uun uur uus uut uuu