-er -ic c-- ccc cce ccf cci cck ccr ccs cct ccu ce- cec cee cef cei cek cer ces cet ceu cfc cfe cff cfi cfk cfr cfs cft cfu ci- cic cie cif cii cik cir cis cit ciu ckc cki cks ckt crc cre crf cri crk crr crs crt cru csc cse csf csi csk csr css cst csu ctc cte ctf cti ctk ctr cts ctt ctu cuc cue cuf cui cuk cur cus cut cuu ec- ecc ece ecf eci eck ecr ecs ect ecu eec eee eef eek eer ees eet ef- efc efe eff efi efr efs eft eic eie eif eii eik eir eis eit eiu ekc eke ekf eki ekr eks ekt eku erc ere erf eri erk err ers ert eru es- esc ese esf esi esk esr ess est esu etc ete etf eti etk etr ets ett etu eu- euc eue euf eui eur eus eut fcc fce fcf fci fck fcr fcs fct fcu fec fee fef fei fek fer fes fet feu ffc ffe fff ffi ffk ffr ffs fft ffu fic fie fif fii fik fir fis fit fiu fkc fkf fki fkk fkt frc fre frf fri frk frr frs frt fru fsc fse fsf fsi fsk fsr fss fst fsu ftc fte ftf fti ftk ftr fts ftt ftu fue fuf fui fuk fur fus fut fuu i-f icc ice icf ici ick icr ics ict icu ie- iec iee ief iei iek ier ies iet ifc ife iff ifi ifr ifs ift ifu iic iie iif iii iir iis iit iiu ikc ike ikf iki ikk ikr iks ikt iku ir- irc ire irf iri irk irr irs irt iru is- isc ise isf isi isk isr iss ist isu itc ite itf iti itk its itt itu iu- iuc iue iui iur ius iut k-t kcc kce kci kck kcr kcs kct kcu ke- kec kee kef kei kek ker kes ket kfc kff kfi kfs kfu kic kie kif kii kik kir kis kit kiu kkc kke kki kkk kkr kks kkt kku krc krf kri krk krr krs krt kru ksc kse ksf ksi ksk ksr kss kst ksu ktc kte ktf ktk ktr kts ktt ktu kuc kue kui kuk kur kus kut kuu rcc rce rcf rci rcr rcs rct rcu re- rec ree ref rei rek rer res ret reu rfc rfe rff rfi rfk rfr rfs rft rfu ric rie rif rii rik rir ris rit rkc rke rkf rkk rks rkt rku rrc rrf rri rrk rrr rrs rrt rru rsc rse rsf rsi rsk rsr rss rst rsu rtc rte rtf rti rtk rtr rts rtt rtu ruc rue ruf rui ruk rur rus rut ruu scc sce scf sci sck scr scs sct scu se- sec see sef sei sek ser ses set seu sfc sfe sff sfi sfk sfr sfs sft sfu sic sie sif sii sik sir sis sit siu sk- skc ske skf ski skk skr sks skt sku sr- src sre srf sri srk srr srs srt ss- ssc sse ssf ssi ssk ssr sss sst ssu stc ste stf sti stk str sts stt stu suc sue suf sui suk sur sus sut suu tcc tce tcf tci tck tcr tcs tct tcu te- tec tee tef tei tek ter tes tet teu tfc tfe tff tfi tfk tfr tfs tft tfu tic tie tif tii tik tir tis tit tiu tkc tke tkk tkr tks tkt trc tre trf tri trk trr trs trt tru tsc tse tsf tsi tsk tsr tss tst tsu ttc tte ttf tti ttk ttr tts ttt ttu tuc tue tuf tui tuk tur tus tut tuu ucc uce ucf uci uck ucr ucs uct ucu uec uee uef uei uer ues uet ufc ufe uff ufi ufr ufs uft ufu uic uie uif uii uir uis uit uiu ukc uke ukf uki ukk ukr uku ur- urc ure urf uri urk urr urs urt uru usc use usf usi usk usr uss ust usu utc ute utf uti utk utr uts utt utu uuc uue uur uus uut uuu