-al -ol a-a a-b a-i aaa aab aai aak aal aao aav ab- aba abb abi abk abl abo abv ai- aia aib aii aik ail aio aiv aka akb aki akk akl ako akv al- ala alb ali alk all alo alv aoa aob aoi aok aol aoo aov av- ava avb avi avk avl avo baa bab bai bak bal bao bav bba bbb bbi bbk bbl bbo bi- bia bib bii bik bil bio biv bka bkb bkk bkl bko bkv bla blb bli blk bll blo blv boa bob boi bok bol boo bov bva bvb bvi bvk bvl bvo bvv i-v ia- iaa iab iai ial iao iav iba ibb ibi ibk ibl ibo ibv iia iib iii iil iio ika ikb iki ikk ikl iko ikv il- ila ilb ili ilk ill ilo ilv io- ioa iob ioi iol ioo iov iva ivb ivi ivl ivo ivv ka- kaa kab kai kak kal kao kav kba kbb kbi kbk kbl kbo kia kib kii kik kil kio kiv kkb kki kkk kkl kkv kl- kla klb kli klo klv koa kob koi kok kol koo kva kvb kvi kvk kvo kvv la- laa lab lai lak lal lao lav lba lbb lbi lbk lbl lbo lbv lia lib lii lik lil lio liv lka lkb lkl lla llb lli llk lll llo llv loa lob loi lok lol loo lov lva lvb lvi lvl lvv o-i oaa oab oai oak oal oao oav ob- oba obb obi obk obl obo obv oia oib oii oik oil oio oiv oka okb oki okk okl oko ola olb oli olk oll olo oo- ooa oob ooi ook ool ooo oov ov- ova ovb ovi ovl ovo ovv v-a vaa vab vai vak val vao vav vba vbi vbk vbl vbo vbv vi- via vib vii vik vil vio viv vka vkb vl- vla vlb vlk vll vlo vlv voa vob voi vok vol voo vov vva vvb vvi vvo vvv