a-a a-b a-i aaa aab aah aai aak aan aao aar ab- aba abb abh abi abk abn abo abr aha ahb ahh ahi ahk ahn aho ahr ai- aia aib aih aii aik ain aio air aka akb akh aki akk akn ako akr an- ana anb anh ani ank ann ano anr aoa aob aoh aoi aok aon aoo aor ar- ara arb arh ari ark arn aro arr baa bab bah bai bak ban bao bar bba bbb bbh bbi bbk bbn bbo bbr bha bhb bhh bhi bhk bho bhr bi- bia bib bih bii bik bin bio bir bka bkb bkk bkn bko bkr bna bnb bni bnk bnn bno bnr boa bob boh boi bok bon boo bor bra brb brh bri brk brn bro brr h-i haa hab hah hai hak han hao har hba hbb hbh hbi hbk hbn hbo hbr hha hhb hhh hhi hhk hhn hho hhr hia hib hih hii hik hin hio hir hka hkb hkh hki hkk hkn hko hkr hna hnb hnh hnk hnn hno hoa hob hoh hoi hok hon hoo hor hr- hra hrb hrh hri hrk hrn hro hrr ia- iaa iab iah iai ian iao iar iba ibb ibh ibi ibk ibn ibo ibr iha ihb ihh ihi ihk ihn iho ihr iia iib iih iii iin iio iir ika ikb iki ikk iko ikr in- ina inb inh ini ink inn ino inr io- ioa iob ioh ioi ion ioo ior ir- ira irb iri irk irn iro irr ka- kaa kab kah kai kak kan kao kar kba kbb kbh kbi kbk kbn kbo kbr kha khh khi khk khn kho khr kia kib kih kii kik kin kio kir kkb kkh kki kkk kkn kkr kn- kna kni knk knn kno knr koa kob koh koi kok kon koo kor kra kri krk krn kro krr n-i naa nab nah nai nak nan nao nar nba nbb nbi nbk nbn nbo nbr nha nhb nhh nhi nhk nhn nhr nia nib nih nii nik nin nio nir nka nki nkk nkn nko nkr nna nnb nnh nni nnk nnn nno no- noa nob noh noi nok non noo nor nra nrb nri nrk nrn nro nrr o-i oaa oab oah oai oak oan oao oar ob- oba obb obh obi obk obn obo obr oha ohh ohi ohn oho ohr oia oib oii oik oin oio oir oka okb oki okk oko okr on- ona onb onh oni onk onn ono onr oo- ooa oob ooh ooi ook oon ooo oor or- ora orb orh ori ork orn oro orr ra- raa rab rah rai rak ran rao rar rba rbb rbh rbi rbk rbn rbo rbr rh- rha rhb rhh rhi rhn rho rhr ria rib rih rii rik rin rio rir rkb rkk rko rna rnb rnh rni rnn rno rnr roa rob roh roi rok ron roo ror rra rrb rrh rri rrk rrn rrr