-er -ic -ji c-- c-j ccc cce cci ccj ccm ccr ce- cec cee cei cej cem cer ci- cic cie cii cij cim cir cjc cjr cmc cme cmi cmj cmm cmr crc cre cri crj crm crr ec- ecc ece eci ecj ecm ecr eec eee eem eer eic eie eii eij eim eir ejc eji em- emc eme emi emm emr erc ere eri erm err icc ice ici icj icm icr ie- iec iee iei iej iem ier iic iie iii iij iim iir ijc ije iji ijm im- imc ime imi imm ir- irc ire iri irj irm irr j-i jcc jce jci jcm jcr jec jee jei jej jem jer jic jie jii jij jim jir jjc jjj jjr jmc jme jmi jmj jmm jmr jrc jri jrm jrr m-r mc- mcc mce mci mcm mcr mec mee mei mej mem mer mi- mic mie mii mij mim mir mjc mje mjj mjm mjr mmc mme mmi mmj mmm mmr mrc mre mri mrj mrm mrr rcc rce rci rcj rcm rcr re- rec ree rei rem rer ric rie rii rim rir rjc rjm rjr rmc rme rmi rmm rmr rrc rri rrm rrr