-er c-- ccc cce cck ccn ccr cct ccu ce- cec cee cek cen cer cet ceu ckc ckt cn- cnc cne cnn cnr cnt cnu crc cre crk crn crr crt cru ctc cte ctk ctn ctr ctt ctu cuc cue cuk cun cur cut cuu ec- ecc ece eck ecn ecr ect ecu eec eee eek een eer eet ekc eke ekr ekt eku en- enc ene enk enn enr ent enu erc ere erk ern err ert eru etc ete etk etn etr ett etu eu- euc eue eun eur eut k-t kcc kce kck kcn kcr kct kcu ke- kec kee kek ken ker ket kkc kke kkk kkn kkr kkt kku kn- knc kne knk knn knr knt knu krc krk krn krr krt kru ktc kte ktk ktn ktr ktt ktu kuc kue kuk kun kur kut kuu ncc nce nck ncn ncr nct ncu ne- nec nee nek nen ner net neu nkc nke nkk nkn nkr nkt nku nnc nne nnk nnn nnt nnu nrc nre nrk nrn nrr nrt nru ntc nte ntk ntn ntr ntt ntu nuc nue nuk nun nur nut nuu rcc rce rcn rcr rct rcu re- rec ree rek ren rer ret reu rkc rke rkk rkt rku rnc rnn rnr rnt rnu rrc rrk rrn rrr rrt rru rtc rte rtk rtn rtr rtt rtu ruc rue ruk run rur rut ruu tcc tce tck tcn tcr tct tcu te- tec tee tek ten ter tet teu tkc tke tkk tkr tkt tnc tne tnk tnn tnr tnt trc tre trk trn trr trt tru ttc tte ttk ttn ttr ttt ttu tuc tue tuk tun tur tut tuu ucc uce uck ucn ucr uct ucu uec uee uen uer uet ukc uke ukk ukn ukr uku un- unc une unk unn unr unt unu ur- urc ure urk urn urr urt uru utc ute utk utn utr utt utu uuc uue uun uur uut uuu