-er -ic a-a a-c a-i aaa aac aae aai aam aap aar ac- aca acc ace aci acm acp acr aea aec aee aei aem aep aer ai- aia aic aie aii aim aip air ama amc ame ami amm amp amr ap- apa apc ape api apm app apr ar- ara arc are ari arm arp arr c-- caa cac cae cai cam cap car cca ccc cce cci ccm ccp ccr ce- cea cec cee cei cem cep cer ci- cia cic cie cii cim cip cir cma cmc cme cmi cmm cmp cmr cpa cpc cpe cpi cpm cpp cpr cra crc cre cri crm crp crr eaa eac eae eai eam eap ear ec- eca ecc ece eci ecm ecr eea eec eee eem eep eer eia eic eie eii eim eip eir em- ema emc eme emi emm emp emr ep- epa epc epe epi epm epp epr era erc ere eri erm erp err ia- iaa iac iae iai iam iap iar ica icc ice ici icm icp icr ie- iea iec iee iei iem iep ier iia iic iie iii iim iip iir im- ima imc ime imi imm imp ipa ipc ipe ipi ipm ipp ipr ir- ira irc ire iri irm irp irr m-r maa mac mae mai mam map mar mc- mca mcc mce mci mcm mcp mcr mea mec mee mei mem mep mer mi- mia mic mie mii mim mip mir mma mmc mme mmi mmm mmp mmr mpa mpc mpe mpi mpm mpp mpr mra mrc mre mri mrm mrp mrr p-p paa pac pae pai pam pap par pca pcc pce pci pcm pcp pcr pea pec pee pei pem pep per pia pic pie pii pim pip pir pma pmc pme pmi pmm pmp pmr ppa ppc ppe ppi ppm ppp ppr pra prc pre pri prm prp prr ra- raa rac rae rai ram rap rar rca rcc rce rci rcm rcp rcr re- rea rec ree rei rem rep rer ria ric rie rii rim rip rir rma rmc rme rmi rmm rmp rmr rpa rpc rpe rpi rpm rpp rpr rra rrc rri rrm rrp rrr