-er -ic a-a a-c a-i aaa aac aad aae aai aak aao aar ac- aca acc acd ace aci ack aco acr ad- ada adc add ade adi adk ado adr aea aec aed aee aei aek aeo aer ai- aia aic aid aie aii aik aio air aka akc akd ake aki akk ako akr aoa aoc aod aoe aoi aok aoo aor ar- ara arc ard are ari ark aro arr c-- caa cac cad cae cai cak cao car cca ccc ccd cce cci cck cco ccr cda cdc cdd cde cdi cdk cdo cdr ce- cea cec ced cee cei cek ceo cer ci- cia cic cid cie cii cik cio cir cka ckc ckd cki cko co- coa coc cod coe coi cok coo cor cra crc crd cre cri crk cro crr daa dac dad dae dai dak dao dar dca dcc dcd dce dci dck dco dcr dda ddc ddd dde ddi ddk ddo ddr de- dea dec ded dee dei dek deo der di- dia dic did die dii dik dio dir dka dkc dke dki dkk dko dkr doa doc dod doe doi dok doo dor dra drc drd dre dri drk dro drr eaa eac ead eae eai eak eao ear ec- eca ecc ecd ece eci eck eco ecr ed- eda edc edd ede edi edk edo edr eea eec eed eee eek eeo eer eia eic eid eie eii eik eio eir eka ekc ekd eke eki eko ekr eo- eoa eoc eod eoe eoi eok eoo eor era erc erd ere eri erk ero err i-d ia- iaa iac iad iae iai iao iar ica icc icd ice ici ick ico icr ida idc idd ide idi idk ido idr ie- iea iec ied iee iei iek ier iia iic iid iie iii iio iir ika ikc ike iki ikk iko ikr io- ioa ioc iod ioe ioi ioo ior ir- ira irc ird ire iri irk iro irr ka- kaa kac kad kae kai kak kao kar kca kcc kcd kce kci kck kcr kda kdc kde kdk kdo kdr ke- kea kec ked kee kei kek keo ker kia kic kid kie kii kik kio kir kkc kke kki kkk kkr koa koc kod koe koi kok koo kor kra krc krd kri krk kro krr o-i oaa oac oad oae oai oak oao oar oc- oca occ ocd oci ock oco ocr oda odc odd ode odi odo odr oea oec oed oee oei oeo oer oia oic oid oie oii oik oio oir oka okc okd oke oki okk oko okr oo- ooa ooc ood ooi ook ooo oor or- ora orc ord ore ori ork oro orr ra- raa rac rad rae rai rak rao rar rca rcc rcd rce rci rco rcr rda rdc rdd rde rdi rdo rdr re- rea rec red ree rei rek reo rer ria ric rid rie rii rik rio rir rkc rke rkk rko roa roc rod roe roi rok roo ror rra rrc rrd rri rrk rrr