-al a-a a-b aaa aab aag aal aar aav ab- aba abb abg abl abr abv ag- aga agb agg agl agr agv al- ala alb alg all alr alv ar- ara arb arg arl arr arv av- ava avb avg avl avr baa bab bag bal bar bav bba bbb bbg bbl bbr bga bgb bgg bgl bgr bgv bla blb blg bll blr blv bra brb brg brl brr brv bva bvb bvg bvl bvr bvv gaa gab gag gal gar gav gba gbg gbl gbr gbv gga ggb ggg ggr ggv gla glb glg gll glr glv gra grb grg grl grr grv gva gvb gvg gvl gvr la- laa lab lag lal lar lav lba lbb lbg lbl lbr lbv lga lgb lgg lgl lgr lgv lla llb llg lll llr llv lra lrb lrg lrr lrv lva lvb lvg lvl lvr lvv ra- raa rab rag ral rar rav rba rbb rbg rbl rbr rga rgb rgg rgr rgv rla rlg rll rlr rra rrb rrg rrl rrr rva rvb rvg rvl rvr rvv v-a vaa vab vag val var vav vba vbg vbl vbr vbv vga vgg vgl vgr vl- vla vlb vll vlv vra vrb vrg vrr vva vvb vvg vvr vvv