-er c-- ccc cce cck ccl ccn ccr ccs cct ccu ce- cec cee cek cel cen cer ces cet ceu ckc cks ckt cl- clc cle clk cll cln clr cls clt clu cn- cnc cne cnl cnn cnr cns cnt cnu crc cre crk crl crn crr crs crt cru csc cse csk csl csn csr css cst csu ctc cte ctk ctl ctn ctr cts ctt ctu cuc cue cuk cul cun cur cus cut cuu ec- ecc ece eck ecl ecn ecr ecs ect ecu eec eee eek eel een eer ees eet ekc eke ekl ekr eks ekt eku elc ele elk ell eln elr els elt elu en- enc ene enk enl enn enr ens ent enu erc ere erk erl ern err ers ert eru es- esc ese esk esl esn esr ess est esu etc ete etk etl etn etr ets ett etu eu- euc eue eul eun eur eus eut k-t kcc kce kck kcl kcn kcr kcs kct kcu ke- kec kee kek kel ken ker kes ket kkc kke kkk kkl kkn kkr kks kkt kku kl- klc klr kls klt klu kn- knc kne knk knl knn knr knt knu krc krk krl krn krr krs krt kru ksc kse ksk ksl ksn ksr kss kst ksu ktc kte ktk ktl ktn ktr kts ktt ktu kuc kue kuk kul kun kur kus kut kuu lcc lce lck lcl lcn lcr lcs lct lcu lec lee lek lel len ler les let leu lkl lkr lks lkt llc lle llk lll lln llr lls llt llu lnc lne lnk lnl lnn lnr lns lnt lnu lrc lrk lrn lrr lrs lrt lru lsc lse lsk lsl lsn lsr lss lst lsu ltc lte ltk ltl ltr lts ltt ltu luc lue luk lul lun lur lus lut luu ncc nce nck ncl ncn ncr ncs nct ncu ne- nec nee nek nel nen ner nes net neu nkc nke nkk nkn nkr nks nkt nku nlc nle nlk nll nln nlr nls nlt nlu nnc nne nnk nnl nnn nns nnt nnu nrc nre nrk nrl nrn nrr nrs nrt nru nsc nse nsk nsl nsn nsr nss nst nsu ntc nte ntk ntn ntr nts ntt ntu nuc nue nuk nul nun nur nus nut nuu rcc rce rcl rcn rcr rcs rct rcu re- rec ree rek rel ren rer res ret reu rkc rke rkk rks rkt rku rlc rle rll rln rlr rls rlt rlu rnc rnn rnr rns rnt rnu rrc rrk rrl rrn rrr rrs rrt rru rsc rse rsk rsl rsn rsr rss rst rsu rtc rte rtk rtl rtn rtr rts rtt rtu ruc rue ruk run rur rus rut ruu scc sce sck scl scn scr scs sct scu se- sec see sek sel sen ser ses set seu sk- skc ske skk skl skr sks skt sku slc sle slk sll sln slr sls slt slu snc sne snk snl snn snr sns snt snu sr- src sre srk srl srn srr srs srt ss- ssc sse ssk ssl ssn ssr sss sst ssu stc ste stk stl stn str sts stt stu suc sue suk sul sun sur sus sut suu tcc tce tck tcl tcn tcr tcs tct tcu te- tec tee tek tel ten ter tes tet teu tkc tke tkk tkl tkr tks tkt tlc tle tlk tll tln tlr tls tlt tlu tnc tne tnk tnl tnn tnr tns tnt trc tre trk trl trn trr trs trt tru tsc tse tsk tsl tsn tsr tss tst tsu ttc tte ttk ttl ttn ttr tts ttt ttu tuc tue tuk tul tun tur tus tut tuu ucc uce uck ucl ucn ucr ucs uct ucu uec uee uel uen uer ues uet ukc uke ukk ukl ukn ukr uku ulc ule ulk ull uln ulr uls ult ulu un- unc une unk unl unn unr uns unt unu ur- urc ure urk url urn urr urs urt uru usc use usk usl usn usr uss ust usu utc ute utk utl utn utr uts utt utu uuc uue uun uur uus uut uuu