-al -ol a-a a-b a-z aaa aab aak aal aao aav aaz ab- aba abb abk abl abo abv abz aka akb akk akl ako akv al- ala alb alk all alo alv alz aoa aob aok aol aoo aov av- ava avb avk avl avo avz az- aza azb azo azz baa bab bak bal bao bav baz bba bbb bbk bbl bbo bka bkb bkk bkl bko bkv bla blb blk bll blo blv blz boa bob bok bol boo bov boz bva bvb bvk bvl bvo bvv bza bzo bzz k-z ka- kaa kab kak kal kao kav kaz kba kbb kbk kbl kbo kbz kkb kkk kkl kkv kl- kla klb klo klv klz koa kob kok kol koo koz kva kvb kvk kvo kvv kzo la- laa lab lak lal lao lav laz lba lbb lbk lbl lbo lbv lka lkb lkl lla llb llk lll llo llv llz loa lob lok lol loo lov loz lva lvb lvl lvv lvz lzo oaa oab oak oal oao oav ob- oba obb obk obl obo obv oka okb okk okl oko ola olb olk oll olo oo- ooa oob ook ool ooo oov ov- ova ovb ovl ovo ovv oza ozo ozz v-a vaa vab vak val vao vav vaz vba vbk vbl vbo vbv vbz vka vkb vl- vla vlb vlk vll vlo vlv voa vob vok vol voo vov voz vva vvb vvo vvv vvz zaa zab zak zao zav zaz zbb zbl zbv zka zla zo- zoa zob zok zol zoo zzz