-er c-- ccc cce ccf cck ccn ccr ccs cct ccu ce- cec cee cef cek cen cer ces cet ceu cfc cfe cff cfk cfn cfr cfs cft cfu ckc cks ckt cn- cnc cne cnf cnn cnr cns cnt cnu crc cre crf crk crn crr crs crt cru csc cse csf csk csn csr css cst csu ctc cte ctf ctk ctn ctr cts ctt ctu cuc cue cuf cuk cun cur cus cut cuu ec- ecc ece ecf eck ecn ecr ecs ect ecu eec eee eef eek een eer ees eet ef- efc efe eff efr efs eft ekc eke ekf ekr eks ekt eku en- enc ene enf enk enn enr ens ent enu erc ere erf erk ern err ers ert eru es- esc ese esf esk esn esr ess est esu etc ete etf etk etn etr ets ett etu eu- euc eue euf eun eur eus eut fcc fce fcf fck fcn fcr fcs fct fcu fec fee fef fek fen fer fes fet feu ffc ffe fff ffk ffn ffr ffs fft ffu fkc fkf fkk fkt fnc fne fnf fnk fnn fnr fns fnt fnu frc fre frf frk frn frr frs frt fru fsc fse fsf fsk fsn fsr fss fst fsu ftc fte ftf ftk ftn ftr fts ftt ftu fue fuf fuk fun fur fus fut fuu k-t kcc kce kck kcn kcr kcs kct kcu ke- kec kee kef kek ken ker kes ket kfc kff kfs kfu kkc kke kkk kkn kkr kks kkt kku kn- knc kne knf knk knn knr knt knu krc krf krk krn krr krs krt kru ksc kse ksf ksk ksn ksr kss kst ksu ktc kte ktf ktk ktn ktr kts ktt ktu kuc kue kuk kun kur kus kut kuu ncc nce ncf nck ncn ncr ncs nct ncu ne- nec nee nef nek nen ner nes net neu nfc nfe nff nfk nfn nfr nfs nft nfu nkc nke nkf nkk nkn nkr nks nkt nku nnc nne nnf nnk nnn nns nnt nnu nrc nre nrf nrk nrn nrr nrs nrt nru nsc nse nsf nsk nsn nsr nss nst nsu ntc nte ntf ntk ntn ntr nts ntt ntu nuc nue nuk nun nur nus nut nuu rcc rce rcf rcn rcr rcs rct rcu re- rec ree ref rek ren rer res ret reu rfc rfe rff rfk rfn rfr rfs rft rfu rkc rke rkf rkk rks rkt rku rnc rnn rnr rns rnt rnu rrc rrf rrk rrn rrr rrs rrt rru rsc rse rsf rsk rsn rsr rss rst rsu rtc rte rtf rtk rtn rtr rts rtt rtu ruc rue ruf ruk run rur rus rut ruu scc sce scf sck scn scr scs sct scu se- sec see sef sek sen ser ses set seu sfc sfe sff sfk sfn sfr sfs sft sfu sk- skc ske skf skk skr sks skt sku snc sne snf snk snn snr sns snt snu sr- src sre srf srk srn srr srs srt ss- ssc sse ssf ssk ssn ssr sss sst ssu stc ste stf stk stn str sts stt stu suc sue suf suk sun sur sus sut suu tcc tce tcf tck tcn tcr tcs tct tcu te- tec tee tef tek ten ter tes tet teu tfc tfe tff tfk tfn tfr tfs tft tfu tkc tke tkk tkr tks tkt tnc tne tnf tnk tnn tnr tns tnt trc tre trf trk trn trr trs trt tru tsc tse tsf tsk tsn tsr tss tst tsu ttc tte ttf ttk ttn ttr tts ttt ttu tuc tue tuf tuk tun tur tus tut tuu ucc uce ucf uck ucn ucr ucs uct ucu uec uee uef uen uer ues uet ufc ufe uff ufn ufr ufs uft ufu ukc uke ukf ukk ukn ukr uku un- unc une unf unk unn unr uns unt unu ur- urc ure urf urk urn urr urs urt uru usc use usf usk usn usr uss ust usu utc ute utf utk utn utr uts utt utu uuc uue uun uur uus uut uuu