-er -ic c-- ccc cce cci cck ccl ccr ccs cct ccu ce- cec cee cei cek cel cer ces cet ceu ci- cic cie cii cik cil cir cis cit ciu ckc cki cks ckt cl- clc cle cli clk cll clr cls clt clu crc cre cri crk crl crr crs crt cru csc cse csi csk csl csr css cst csu ctc cte cti ctk ctl ctr cts ctt ctu cuc cue cui cuk cul cur cus cut cuu ec- ecc ece eci eck ecl ecr ecs ect ecu eec eee eek eel eer ees eet eic eie eii eik eil eir eis eit eiu ekc eke eki ekl ekr eks ekt eku elc ele eli elk ell elr els elt elu erc ere eri erk erl err ers ert eru es- esc ese esi esk esl esr ess est esu etc ete eti etk etl etr ets ett etu eu- euc eue eui eul eur eus eut icc ice ici ick icl icr ics ict icu ie- iec iee iei iek iel ier ies iet iic iie iii iil iir iis iit iiu ikc ike iki ikk ikl ikr iks ikt iku il- ilc ile ili ilk ill ilr ils ilt ilu ir- irc ire iri irk irl irr irs irt iru is- isc ise isi isk isl isr iss ist isu itc ite iti itk itl its itt itu iu- iuc iue iui iur ius iut k-t kcc kce kci kck kcl kcr kcs kct kcu ke- kec kee kei kek kel ker kes ket kic kie kii kik kil kir kis kit kiu kkc kke kki kkk kkl kkr kks kkt kku kl- klc kli klr kls klt klu krc kri krk krl krr krs krt kru ksc kse ksi ksk ksl ksr kss kst ksu ktc kte ktk ktl ktr kts ktt ktu kuc kue kui kuk kul kur kus kut kuu lcc lce lci lck lcl lcr lcs lct lcu lec lee lei lek lel ler les let leu lic lie lii lik lil lir lis lit liu lkl lkr lks lkt llc lle lli llk lll llr lls llt llu lrc lri lrk lrr lrs lrt lru lsc lse lsi lsk lsl lsr lss lst lsu ltc lte lti ltk ltl ltr lts ltt ltu luc lue lui luk lul lur lus lut luu rcc rce rci rcl rcr rcs rct rcu re- rec ree rei rek rel rer res ret reu ric rie rii rik ril rir ris rit rkc rke rkk rks rkt rku rlc rle rli rll rlr rls rlt rlu rrc rri rrk rrl rrr rrs rrt rru rsc rse rsi rsk rsl rsr rss rst rsu rtc rte rti rtk rtl rtr rts rtt rtu ruc rue rui ruk rur rus rut ruu scc sce sci sck scl scr scs sct scu se- sec see sei sek sel ser ses set seu sic sie sii sik sil sir sis sit siu sk- skc ske ski skk skl skr sks skt sku slc sle sli slk sll slr sls slt slu sr- src sre sri srk srl srr srs srt ss- ssc sse ssi ssk ssl ssr sss sst ssu stc ste sti stk stl str sts stt stu suc sue sui suk sul sur sus sut suu tcc tce tci tck tcl tcr tcs tct tcu te- tec tee tei tek tel ter tes tet teu tic tie tii tik til tir tis tit tiu tkc tke tkk tkl tkr tks tkt tlc tle tli tlk tll tlr tls tlt tlu trc tre tri trk trl trr trs trt tru tsc tse tsi tsk tsl tsr tss tst tsu ttc tte tti ttk ttl ttr tts ttt ttu tuc tue tui tuk tul tur tus tut tuu ucc uce uci uck ucl ucr ucs uct ucu uec uee uei uel uer ues uet uic uie uii uil uir uis uit uiu ukc uke uki ukk ukl ukr uku ulc ule uli ulk ull ulr uls ult ulu ur- urc ure uri urk url urr urs urt uru usc use usi usk usl usr uss ust usu utc ute uti utk utl utr uts utt utu uuc uue uur uus uut uuu