-er a-a a-i aaa aad aae aai aak aao aar ad- ada add ade adi adk ado adr aea aed aee aei aek aeo aer ai- aia aid aie aii aik aio air aka akd ake aki akk ako akr aoa aod aoe aoi aok aoo aor ar- ara ard are ari ark aro arr daa dad dae dai dak dao dar dda ddd dde ddi ddk ddo ddr de- dea ded dee dei dek deo der di- dia did die dii dik dio dir dka dke dki dkk dko dkr doa dod doe doi dok doo dor dra drd dre dri drk dro drr eaa ead eae eai eak eao ear ed- eda edd ede edi edk edo edr eea eed eee eek eeo eer eia eid eie eii eik eio eir eka ekd eke eki eko ekr eo- eoa eod eoe eoi eok eoo eor era erd ere eri erk ero err i-d ia- iaa iad iae iai iao iar ida idd ide idi idk ido idr ie- iea ied iee iei iek ier iia iid iie iii iio iir ika ike iki ikk iko ikr io- ioa iod ioe ioi ioo ior ir- ira ird ire iri irk iro irr ka- kaa kad kae kai kak kao kar kda kde kdk kdo kdr ke- kea ked kee kei kek keo ker kia kid kie kii kik kio kir kke kki kkk kkr koa kod koe koi kok koo kor kra krd kri krk kro krr o-i oaa oad oae oai oak oao oar oda odd ode odi odo odr oea oed oee oei oeo oer oia oid oie oii oik oio oir oka okd oke oki okk oko okr oo- ooa ood ooi ook ooo oor or- ora ord ore ori ork oro orr ra- raa rad rae rai rak rao rar rda rdd rde rdi rdo rdr re- rea red ree rei rek reo rer ria rid rie rii rik rio rir rke rkk rko roa rod roe roi rok roo ror rra rrd rri rrk rrr