-er -ic c-- ccc cce cci cck ccm cco ccr cct ce- cec cee cei cek cem ceo cer cet ci- cic cie cii cik cim cio cir cit ckc cki ckm cko ckt cmc cme cmi cmk cmm cmo cmr cmt co- coc coe coi cok com coo cor cot crc cre cri crk crm cro crr crt ctc cte cti ctk ctm cto ctr ctt ec- ecc ece eci eck ecm eco ecr ect eec eee eek eem eeo eer eet eic eie eii eik eim eio eir eit ekc eke eki eko ekr ekt em- emc eme emi emk emm emo emr emt eo- eoc eoe eoi eok eom eoo eor eot erc ere eri erk erm ero err ert etc ete eti etk etm eto etr ett icc ice ici ick icm ico icr ict ie- iec iee iei iek iem ier iet iic iie iii iim iio iir iit ikc ike iki ikk iko ikr ikt im- imc ime imi imm imo imt io- ioc ioe ioi iom ioo ior iot ir- irc ire iri irk irm iro irr irt itc ite iti itk itm ito itt k-t kcc kce kci kck kcm kcr kct ke- kec kee kei kek kem keo ker ket kic kie kii kik kim kio kir kit kkc kke kki kkk kkm kkr kkt kmc kme kmi kmk kmm kmo kmt koc koe koi kok kom koo kor kot krc kri krk kro krr krt ktc kte ktk ktm kto ktr ktt m-o m-r mc- mcc mce mci mck mcm mco mcr mct mec mee mei mek mem meo mer met mi- mic mie mii mik mim mio mir mit mkc mke mkk mkm mko mkr mkt mmc mme mmi mmk mmm mmo mmr mmt moc moe moi mok mom moo mor mot mrc mre mri mrk mrm mro mrr mrt mtc mte mti mtk mtm mto mtr mtt o-i oc- occ oci ock ocm oco ocr oct oec oee oei oem oeo oer oet oic oie oii oik oim oio oir oit okc oke oki okk oko okr om- omc ome omi omm omo omr omt oo- ooc ooi ook oom ooo oor oot or- orc ore ori ork orm oro orr ort ot- otc ote oti otk otm oto otr ott rcc rce rci rcm rco rcr rct re- rec ree rei rek rem reo rer ret ric rie rii rik rim rio rir rit rkc rke rkk rkm rko rkt rmc rme rmi rmm rmo rmr rmt roc roe roi rok rom roo ror rot rrc rri rrk rrm rrr rrt rtc rte rti rtk rtm rto rtr rtt tcc tce tci tck tcm tco tcr tct te- tec tee tei tek tem teo ter tet tic tie tii tik tim tio tir tit tkc tke tkk tkm tko tkr tkt tmc tme tmi tmk tmm tmo tmr tmt to- toc toe toi tok tom too tor tot trc tre tri trk trm tro trr trt ttc tte tti ttk ttm tto ttr ttt