-er -ic a-a a-c a-i aaa aac aae aah aai aak aao aar ac- aca acc ace ach aci ack aco acr aea aec aee aeh aei aek aeo aer aha ahc ahe ahh ahi ahk aho ahr ai- aia aic aie aih aii aik aio air aka akc ake akh aki akk ako akr aoa aoc aoe aoh aoi aok aoo aor ar- ara arc are arh ari ark aro arr c-- caa cac cae cah cai cak cao car cca ccc cce cch cci cck cco ccr ce- cea cec cee ceh cei cek ceo cer ch- cha chc che chh chi chk cho chr ci- cia cic cie cih cii cik cio cir cka ckc ckh cki cko co- coa coc coe coh coi cok coo cor cra crc cre crh cri crk cro crr eaa eac eae eah eai eak eao ear ec- eca ecc ece ech eci eck eco ecr eea eec eee eek eeo eer eha ehc ehe ehh ehi eho ehr eia eic eie eii eik eio eir eka ekc eke ekh eki eko ekr eo- eoa eoc eoe eoh eoi eok eoo eor era erc ere erh eri erk ero err h-i haa hac hae hah hai hak hao har hca hcc hce hch hci hck hco hcr he- hea hec hee heh hei hek heo her hha hhc hhe hhh hhi hhk hho hhr hia hic hie hih hii hik hio hir hka hkh hki hkk hko hkr hoa hoc hoe hoh hoi hok hoo hor hr- hra hrc hre hrh hri hrk hro hrr ia- iaa iac iae iah iai iao iar ica icc ice ich ici ick ico icr ie- iea iec iee iei iek ier iha ihc ihe ihh ihi ihk iho ihr iia iic iie iih iii iio iir ika ikc ike iki ikk iko ikr io- ioa ioc ioe ioh ioi ioo ior ir- ira irc ire iri irk iro irr ka- kaa kac kae kah kai kak kao kar kca kcc kce kch kci kck kcr ke- kea kec kee keh kei kek keo ker kha khe khh khi khk kho khr kia kic kie kih kii kik kio kir kkc kke kkh kki kkk kkr koa koc koe koh koi kok koo kor kra krc kri krk kro krr o-i oaa oac oae oah oai oak oao oar oc- oca occ och oci ock oco ocr oea oec oee oeh oei oeo oer oha ohc ohe ohh ohi oho ohr oia oic oie oii oik oio oir oka okc oke oki okk oko okr oo- ooa ooc ooh ooi ook ooo oor or- ora orc ore orh ori ork oro orr ra- raa rac rae rah rai rak rao rar rca rcc rce rch rci rco rcr re- rea rec ree reh rei rek reo rer rh- rha rhc rhe rhh rhi rho rhr ria ric rie rih rii rik rio rir rkc rke rkk rko roa roc roe roh roi rok roo ror rra rrc rrh rri rrk rrr