-er -ic a-a a-c a-i aaa aac aae aai aak aam aao aap aar ac- aca acc ace aci ack acm aco acp acr aea aec aee aei aek aem aeo aep aer ai- aia aic aie aii aik aim aio aip air aka akc ake aki akk akm ako akp akr ama amc ame ami amk amm amo amp amr aoa aoc aoe aoi aok aom aoo aop aor ap- apa apc ape api apk apm apo app apr ar- ara arc are ari ark arm aro arp arr c-- caa cac cae cai cak cam cao cap car cca ccc cce cci cck ccm cco ccp ccr ce- cea cec cee cei cek cem ceo cep cer ci- cia cic cie cii cik cim cio cip cir cka ckc cki ckm cko cma cmc cme cmi cmk cmm cmo cmp cmr co- coa coc coe coi cok com coo cop cor cpa cpc cpe cpi cpk cpm cpo cpp cpr cra crc cre cri crk crm cro crp crr eaa eac eae eai eak eam eao eap ear ec- eca ecc ece eci eck ecm eco ecr eea eec eee eek eem eeo eep eer eia eic eie eii eik eim eio eip eir eka ekc eke eki eko ekp ekr em- ema emc eme emi emk emm emo emp emr eo- eoa eoc eoe eoi eok eom eoo eop eor ep- epa epc epe epi epm epo epp epr era erc ere eri erk erm ero erp err ia- iaa iac iae iai iam iao iap iar ica icc ice ici ick icm ico icp icr ie- iea iec iee iei iek iem iep ier iia iic iie iii iim iio iip iir ika ikc ike iki ikk iko ikr im- ima imc ime imi imm imo imp io- ioa ioc ioe ioi iom ioo iop ior ipa ipc ipe ipi ipm ipo ipp ipr ir- ira irc ire iri irk irm iro irp irr ka- kaa kac kae kai kak kam kao kap kar kca kcc kce kci kck kcm kcp kcr ke- kea kec kee kei kek kem keo kep ker kia kic kie kii kik kim kio kip kir kkc kke kki kkk kkm kkp kkr kma kmc kme kmi kmk kmm kmo kmp koa koc koe koi kok kom koo kop kor kpa kpc kpe kpi kpk kpm kpo kpp kpr kra krc kri krk kro krp krr m-o m-r maa mac mae mai mak mam mao map mar mc- mca mcc mce mci mck mcm mco mcp mcr mea mec mee mei mek mem meo mep mer mi- mia mic mie mii mik mim mio mip mir mka mkc mke mkk mkm mko mkp mkr mma mmc mme mmi mmk mmm mmo mmp mmr moa moc moe moi mok mom moo mop mor mpa mpc mpe mpi mpk mpm mpo mpp mpr mra mrc mre mri mrk mrm mro mrp mrr o-i oaa oac oae oai oak oam oao oap oar oc- oca occ oci ock ocm oco ocp ocr oea oec oee oei oem oeo oep oer oia oic oie oii oik oim oio oip oir oka okc oke oki okk oko okp okr om- oma omc ome omi omm omo omp omr oo- ooa ooc ooi ook oom ooo oop oor op- opa opc ope opi opk opm opo opp opr or- ora orc ore ori ork orm oro orp orr p-p paa pac pae pai pak pam pao pap par pca pcc pce pci pck pcm pco pcp pcr pea pec pee pei pek pem peo pep per pia pic pie pii pik pim pio pip pir pka pkc pke pki pkm pko pkp pkr pma pmc pme pmi pmk pmm pmo pmp pmr poa poc poe poi pok pom poo pop por ppa ppc ppe ppi ppk ppm ppo ppp ppr pra prc pre pri prk prm pro prp prr ra- raa rac rae rai rak ram rao rap rar rca rcc rce rci rcm rco rcp rcr re- rea rec ree rei rek rem reo rep rer ria ric rie rii rik rim rio rip rir rkc rke rkk rkm rko rkp rma rmc rme rmi rmm rmo rmp rmr roa roc roe roi rok rom roo rop ror rpa rpc rpe rpi rpk rpm rpo rpp rpr rra rrc rri rrk rrm rrp rrr