-er a-a a-i aaa aae aaf aai aak aan aao aar aea aee aef aei aek aen aeo aer af- afa afe aff afi afk afn afo afr ai- aia aie aif aii aik ain aio air aka ake aki akk akn ako akr an- ana ane anf ani ank ann ano anr aoa aoe aof aoi aok aon aoo aor ar- ara are arf ari ark arn aro arr eaa eae eaf eai eak ean eao ear eea eee eef eek een eeo eer ef- efa efe eff efi efo efr eia eie eif eii eik ein eio eir eka eke ekf eki eko ekr en- ena ene enf eni enk enn eno enr eo- eoa eoe eof eoi eok eon eoo eor era ere erf eri erk ern ero err faa fae faf fai fak fan fao far fea fee fef fei fek fen feo fer ffa ffe fff ffi ffk ffn ffo ffr fia fie fif fii fik fin fir fka fkf fki fkk fna fne fnf fni fnk fnn fnr foa foe fof foi fok fon foo for fra fre frf fri frk frn fro frr i-f ia- iaa iae iaf iai ian iao iar ie- iea iee ief iei iek ien ier ifa ife iff ifi ifn ifo ifr iia iie iif iii iin iio iir ika ike ikf iki ikk iko ikr in- ina ine inf ini ink inn ino inr io- ioa ioe iof ioi ion ioo ior ir- ira ire irf iri irk irn iro irr ka- kaa kae kaf kai kak kan kao kar ke- kea kee kef kei kek ken keo ker kfa kff kfi kfo kia kie kif kii kik kin kio kir kke kki kkk kkn kkr kn- kna kne knf kni knk knn kno knr koa koe kof koi kok kon koo kor kra krf kri krk krn kro krr n-i naa nae naf nai nak nan nao nar ne- nea nee nef nei nek nen neo ner nfa nfe nff nfi nfk nfn nfo nfr nia nie nif nii nik nin nio nir nka nke nkf nki nkk nkn nko nkr nna nne nnf nni nnk nnn nno no- noa noe nof noi nok non noo nor nra nre nrf nri nrk nrn nro nrr o-i oaa oae oaf oai oak oan oao oar oea oee oef oei oen oeo oer of- ofa ofe off ofi ofn ofo ofr oia oie oif oii oik oin oio oir oka oke oki okk oko okr on- ona one onf oni onk onn ono onr oo- ooa oof ooi ook oon ooo oor or- ora ore orf ori ork orn oro orr ra- raa rae raf rai rak ran rao rar re- rea ree ref rei rek ren reo rer rfa rfe rff rfi rfk rfn rfo rfr ria rie rif rii rik rin rio rir rke rkf rkk rko rna rni rnn rno rnr roa roe rof roi rok ron roo ror rra rrf rri rrk rrn rrr