-al -ol a-a a-b aaa aab aag aal aao aav ab- aba abb abg abl abo abv ag- aga agb agg agl ago agv al- ala alb alg all alo alv aoa aob aog aol aoo aov av- ava avb avg avl avo baa bab bag bal bao bav bba bbb bbg bbl bbo bga bgb bgg bgl bgo bgv bla blb blg bll blo blv boa bob bog bol boo bov bva bvb bvg bvl bvo bvv gaa gab gag gal gao gav gba gbg gbl gbo gbv gga ggb ggg ggo ggv gla glb glg gll glo glv goa gob gog gol goo gov gva gvb gvg gvl gvo la- laa lab lag lal lao lav lba lbb lbg lbl lbo lbv lga lgb lgg lgl lgo lgv lla llb llg lll llo llv loa lob log lol loo lov lva lvb lvg lvl lvv oaa oab oag oal oao oav ob- oba obb obg obl obo obv oga ogg ogl ogo ola olb olg oll olo oo- ooa oob oog ool ooo oov ov- ova ovb ovl ovo ovv v-a vaa vab vag val vao vav vba vbg vbl vbo vbv vga vgg vgl vgo vl- vla vlb vll vlo vlv voa vob vog vol voo vov vva vvb vvg vvo vvv