-al -ol a-a a-b a-i aaa aab aad aai aak aal aao ab- aba abb abd abi abk abl abo ad- ada adb add adi adk adl ado ai- aia aib aid aii aik ail aio aka akb akd aki akk akl ako al- ala alb ald ali alk all alo aoa aob aod aoi aok aol aoo baa bab bad bai bak bal bao bba bbb bbd bbi bbk bbl bbo bda bdb bdd bdi bdk bdl bdo bi- bia bib bid bii bik bil bio bka bkb bkk bkl bko bla blb bld bli blk bll blo boa bob bod boi bok bol boo daa dab dad dai dak dal dao dba dbb dbd dbi dbk dbl dbo dda ddb ddd ddi ddk ddl ddo di- dia dib did dii dik dil dio dka dkb dki dkk dkl dko dl- dla dlb dld dli dlk dll dlo doa dob dod doi dok dol doo i-d ia- iaa iab iad iai ial iao iba ibb ibd ibi ibk ibl ibo ida idb idd idi idk idl ido iia iib iid iii iil iio ika ikb iki ikk ikl iko il- ila ilb ild ili ilk ill ilo io- ioa iob iod ioi iol ioo ka- kaa kab kad kai kak kal kao kba kbb kbd kbi kbk kbl kbo kda kdb kdk kdl kdo kia kib kid kii kik kil kio kkb kki kkk kkl kl- kla klb kld kli klo koa kob kod koi kok kol koo la- laa lab lad lai lak lal lao lba lbb lbd lbi lbk lbl lbo lda ldb ldd ldi ldk ldl ldo lia lib lid lii lik lil lio lka lkb lkl lla llb lld lli llk lll llo loa lob lod loi lok lol loo o-i oaa oab oad oai oak oal oao ob- oba obb obd obi obk obl obo oda odb odd odi odl odo oia oib oid oii oik oil oio oka okb okd oki okk okl oko ola olb old oli olk oll olo oo- ooa oob ood ooi ook ool ooo