-er -ic -ji c-- c-j ccc cce cci ccj ccm cco ccr ce- cec cee cei cej cem ceo cer ci- cic cie cii cij cim cio cir cjc cjr cmc cme cmi cmj cmm cmo cmr co- coc coe coi coj com coo cor crc cre cri crj crm cro crr ec- ecc ece eci ecj ecm eco ecr eec eee eem eeo eer eic eie eii eij eim eio eir ejc eji ejo em- emc eme emi emm emo emr eo- eoc eoe eoi eom eoo eor erc ere eri erm ero err icc ice ici icj icm ico icr ie- iec iee iei iej iem ier iic iie iii iij iim iio iir ijc ije iji ijm ijo im- imc ime imi imm imo io- ioc ioe ioi ioj iom ioo ior ir- irc ire iri irj irm iro irr j-i jcc jce jci jcm jco jcr jec jee jei jej jem jeo jer jic jie jii jij jim jio jir jjc jjj jjr jmc jme jmi jmj jmm jmo jmr joc joe joi joj jom joo jor jrc jri jrm jro jrr m-o m-r mc- mcc mce mci mcm mco mcr mec mee mei mej mem meo mer mi- mic mie mii mij mim mio mir mjc mje mjj mjm mjr mmc mme mmi mmj mmm mmo mmr moc moe moi mom moo mor mrc mre mri mrj mrm mro mrr o-i oc- occ oci ocj ocm oco ocr oec oee oei oem oeo oer oic oie oii oim oio oir ojc oje oji ojm ojo om- omc ome omi omj omm omo omr oo- ooc ooi oom ooo oor or- orc ore ori orm oro orr rcc rce rci rcj rcm rco rcr re- rec ree rei rem reo rer ric rie rii rim rio rir rjc rjm rjr rmc rme rmi rmm rmo rmr roc roe roi roj rom roo ror rrc rri rrm rrr