-er -ic a-a a-c a-i aaa aac aad aae aai aak aao aap aar ac- aca acc acd ace aci ack aco acp acr ad- ada adc add ade adi adk ado adp adr aea aec aed aee aei aek aeo aep aer ai- aia aic aid aie aii aik aio aip air aka akc akd ake aki akk ako akp akr aoa aoc aod aoe aoi aok aoo aop aor ap- apa apc apd ape api apk apo app apr ar- ara arc ard are ari ark aro arp arr c-- caa cac cad cae cai cak cao cap car cca ccc ccd cce cci cck cco ccp ccr cda cdc cdd cde cdi cdk cdo cdp cdr ce- cea cec ced cee cei cek ceo cep cer ci- cia cic cid cie cii cik cio cip cir cka ckc ckd cki cko co- coa coc cod coe coi cok coo cop cor cpa cpc cpd cpe cpi cpk cpo cpp cpr cra crc crd cre cri crk cro crp crr daa dac dad dae dai dak dao dap dar dca dcc dcd dce dci dck dco dcp dcr dda ddc ddd dde ddi ddk ddo ddp ddr de- dea dec ded dee dei dek deo dep der di- dia dic did die dii dik dio dip dir dka dkc dke dki dkk dko dkp dkr doa doc dod doe doi dok doo dop dor dpa dpc dpd dpe dpi dpk dpo dpp dpr dra drc drd dre dri drk dro drp drr eaa eac ead eae eai eak eao eap ear ec- eca ecc ecd ece eci eck eco ecr ed- eda edc edd ede edi edk edo edp edr eea eec eed eee eek eeo eep eer eia eic eid eie eii eik eio eip eir eka ekc ekd eke eki eko ekp ekr eo- eoa eoc eod eoe eoi eok eoo eop eor ep- epa epc epd epe epi epo epp epr era erc erd ere eri erk ero erp err i-d ia- iaa iac iad iae iai iao iap iar ica icc icd ice ici ick ico icp icr ida idc idd ide idi idk ido idp idr ie- iea iec ied iee iei iek iep ier iia iic iid iie iii iio iip iir ika ikc ike iki ikk iko ikr io- ioa ioc iod ioe ioi ioo iop ior ipa ipc ipd ipe ipi ipo ipp ipr ir- ira irc ird ire iri irk iro irp irr ka- kaa kac kad kae kai kak kao kap kar kca kcc kcd kce kci kck kcp kcr kda kdc kde kdk kdo kdp kdr ke- kea kec ked kee kei kek keo kep ker kia kic kid kie kii kik kio kip kir kkc kke kki kkk kkp kkr koa koc kod koe koi kok koo kop kor kpa kpc kpd kpe kpi kpk kpo kpp kpr kra krc krd kri krk kro krp krr o-i oaa oac oad oae oai oak oao oap oar oc- oca occ ocd oci ock oco ocp ocr oda odc odd ode odi odo odp odr oea oec oed oee oei oeo oep oer oia oic oid oie oii oik oio oip oir oka okc okd oke oki okk oko okp okr oo- ooa ooc ood ooi ook ooo oop oor op- opa opc opd ope opi opk opo opp opr or- ora orc ord ore ori ork oro orp orr p-p paa pac pad pae pai pak pao pap par pca pcc pcd pce pci pck pco pcp pcr pda pdc pdd pde pdi pdk pdo pdp pdr pea pec ped pee pei pek peo pep per pia pic pid pie pii pik pio pip pir pka pkc pkd pke pki pko pkp pkr poa poc pod poe poi pok poo pop por ppa ppc ppd ppe ppi ppk ppo ppp ppr pra prc prd pre pri prk pro prp prr ra- raa rac rad rae rai rak rao rap rar rca rcc rcd rce rci rco rcp rcr rda rdc rdd rde rdi rdo rdp rdr re- rea rec red ree rei rek reo rep rer ria ric rid rie rii rik rio rip rir rkc rke rkk rko rkp roa roc rod roe roi rok roo rop ror rpa rpc rpd rpe rpi rpk rpo rpp rpr rra rrc rrd rri rrk rrp rrr