-er -ic c-- ccc ccd cce cci cck ccl ccr ccs ccu cdc cdd cde cdi cdk cdl cdr cds cdu ce- cec ced cee cei cek cel cer ces ceu ci- cic cid cie cii cik cil cir cis ciu ckc ckd cki cks cl- clc cld cle cli clk cll clr cls clu crc crd cre cri crk crl crr crs cru csc csd cse csi csk csl csr css csu cuc cud cue cui cuk cul cur cus cuu dcc dcd dce dci dck dcl dcr dcs dcu ddc ddd dde ddi ddk ddl ddr dds ddu de- dec ded dee dei dek del der des deu di- dic did die dii dik dil dir dis diu dkc dke dki dkk dkl dkr dks dku dl- dlc dld dle dli dlk dll dlr dls dlu drc drd dre dri drk drl drr drs dru dsc dsd dse dsi dsk dsl dsr dss dsu duc dud due dui duk dul dur dus ec- ecc ecd ece eci eck ecl ecr ecs ecu ed- edc edd ede edi edk edl edr eds edu eec eed eee eek eel eer ees eic eid eie eii eik eil eir eis eiu ekc ekd eke eki ekl ekr eks eku elc eld ele eli elk ell elr els elu erc erd ere eri erk erl err ers eru es- esc esd ese esi esk esl esr ess esu eu- euc eud eue eui eul eur eus i-d icc icd ice ici ick icl icr ics icu idc idd ide idi idk idl idr ids idu ie- iec ied iee iei iek iel ier ies iic iid iie iii iil iir iis iiu ikc ike iki ikk ikl ikr iks iku il- ilc ild ile ili ilk ill ilr ils ilu ir- irc ird ire iri irk irl irr irs iru is- isc isd ise isi isk isl isr iss isu iu- iuc iud iue iui iur ius kcc kcd kce kci kck kcl kcr kcs kcu kdc kde kdk kdl kdr kds kdu ke- kec ked kee kei kek kel ker kes kic kid kie kii kik kil kir kis kiu kkc kke kki kkk kkl kkr kks kku kl- klc kld kli klr kls klu krc krd kri krk krl krr krs kru ksc ksd kse ksi ksk ksl ksr kss ksu kuc kud kue kui kuk kul kur kus kuu lcc lcd lce lci lck lcl lcr lcs lcu ldc ldd lde ldi ldk ldl ldr lds ldu lec led lee lei lek lel ler les leu lic lid lie lii lik lil lir lis liu lkl lkr lks llc lld lle lli llk lll llr lls llu lrc lrd lri lrk lrr lrs lru lsc lsd lse lsi lsk lsl lsr lss lsu luc lud lue lui luk lul lur lus luu rcc rcd rce rci rcl rcr rcs rcu rdc rdd rde rdi rdl rdr rds rdu re- rec red ree rei rek rel rer res reu ric rid rie rii rik ril rir ris rkc rke rkk rks rku rlc rld rle rli rll rlr rls rlu rrc rrd rri rrk rrl rrr rrs rru rsc rsd rse rsi rsk rsl rsr rss rsu ruc rud rue rui ruk rur rus ruu scc scd sce sci sck scl scr scs scu sdc sdd sde sdi sdk sdl sdr sds sdu se- sec sed see sei sek sel ser ses seu sic sid sie sii sik sil sir sis siu sk- skc skd ske ski skk skl skr sks sku slc sld sle sli slk sll slr sls slu sr- src srd sre sri srk srl srr srs ss- ssc ssd sse ssi ssk ssl ssr sss ssu suc sud sue sui suk sul sur sus suu ucc ucd uce uci uck ucl ucr ucs ucu udc udd ude udi udk udl udr uds udu uec ued uee uei uel uer ues uic uid uie uii uil uir uis uiu ukc uke uki ukk ukl ukr uku ulc uld ule uli ulk ull ulr uls ulu ur- urc urd ure uri urk url urr urs uru usc usd use usi usk usl usr uss usu uuc uue uur uus uuu