-er c-- ccc cce cck ccn ccr ccs cct ccu ce- cec cee cek cen cer ces cet ceu ckc cks ckt cn- cnc cne cnn cnr cns cnt cnu crc cre crk crn crr crs crt cru csc cse csk csn csr css cst csu ctc cte ctk ctn ctr cts ctt ctu cuc cue cuk cun cur cus cut cuu ec- ecc ece eck ecn ecr ecs ect ecu eec eee eek een eer ees eet ekc eke ekr eks ekt eku en- enc ene enk enn enr ens ent enu erc ere erk ern err ers ert eru es- esc ese esk esn esr ess est esu etc ete etk etn etr ets ett etu eu- euc eue eun eur eus eut k-t kcc kce kck kcn kcr kcs kct kcu ke- kec kee kek ken ker kes ket kkc kke kkk kkn kkr kks kkt kku kn- knc kne knk knn knr knt knu krc krk krn krr krs krt kru ksc kse ksk ksn ksr kss kst ksu ktc kte ktk ktn ktr kts ktt ktu kuc kue kuk kun kur kus kut kuu ncc nce nck ncn ncr ncs nct ncu ne- nec nee nek nen ner nes net neu nkc nke nkk nkn nkr nks nkt nku nnc nne nnk nnn nns nnt nnu nrc nre nrk nrn nrr nrs nrt nru nsc nse nsk nsn nsr nss nst nsu ntc nte ntk ntn ntr nts ntt ntu nuc nue nuk nun nur nus nut nuu rcc rce rcn rcr rcs rct rcu re- rec ree rek ren rer res ret reu rkc rke rkk rks rkt rku rnc rnn rnr rns rnt rnu rrc rrk rrn rrr rrs rrt rru rsc rse rsk rsn rsr rss rst rsu rtc rte rtk rtn rtr rts rtt rtu ruc rue ruk run rur rus rut ruu scc sce sck scn scr scs sct scu se- sec see sek sen ser ses set seu sk- skc ske skk skr sks skt sku snc sne snk snn snr sns snt snu sr- src sre srk srn srr srs srt ss- ssc sse ssk ssn ssr sss sst ssu stc ste stk stn str sts stt stu suc sue suk sun sur sus sut suu tcc tce tck tcn tcr tcs tct tcu te- tec tee tek ten ter tes tet teu tkc tke tkk tkr tks tkt tnc tne tnk tnn tnr tns tnt trc tre trk trn trr trs trt tru tsc tse tsk tsn tsr tss tst tsu ttc tte ttk ttn ttr tts ttt ttu tuc tue tuk tun tur tus tut tuu ucc uce uck ucn ucr ucs uct ucu uec uee uen uer ues uet ukc uke ukk ukn ukr uku un- unc une unk unn unr uns unt unu ur- urc ure urk urn urr urs urt uru usc use usk usn usr uss ust usu utc ute utk utn utr uts utt utu uuc uue uun uur uus uut uuu