a-a a-b a-t aaa aab aag aao aar aat aav aay ab- aba abb abg abo abr abt abv aby ag- aga agb agg ago agr agt agv agy aoa aob aog aoo aor aot aov ar- ara arb arg aro arr art arv ary at- ata atb atg ato atr att atv av- ava avb avg avo avr avt avy ay- aya ayo ayr ayt baa bab bag bao bar bat bav bay bba bbb bbg bbo bbr bbt bby bga bgb bgg bgo bgr bgt bgv boa bob bog boo bor bot bov boy bra brb brg bro brr brt brv bry bta btb btg bto btr btt btv bty bva bvb bvg bvo bvr bvt bvv by- bya byg byo byr byt gaa gab gag gao gar gat gav gay gba gbg gbo gbr gbt gbv gby gga ggb ggg ggo ggr ggt ggv goa gob gog goo gor got gov goy gra grb grg gro grr grt grv gry gta gtb gtg gto gtr gtt gtv gty gva gvb gvg gvo gvr gvt gy- gya gyb gyo gyr oaa oab oag oao oar oat oav ob- oba obb obg obo obr obt obv oby oga ogg ogo ogt ogy oo- ooa oob oog ooo oor oot oov or- ora orb org oro orr ort orv ory ot- ota otb otg oto otr ott otv ov- ova ovb ovo ovv oya oyo ra- raa rab rag rao rar rat rav ray rba rbb rbg rbo rbr rbt rga rgb rgg rgo rgr rgt rgv roa rob rog roo ror rot rov roy rra rrb rrg rrr rrt rta rtb rtg rto rtr rtt rtv rty rva rvb rvg rvo rvr rvt rvv rvy ry- rya ryg ryo ryr ryy taa tab tag tao tar tat tav tay tba tbb tbg tbo tbr tbt tbv tga tgb tgg tgo tgr tgt tgv tgy to- toa tob tog too tor tot tov toy tra trb trg tro trr trt trv try tta ttb ttg tto ttr ttt ttv tty tva tvb tvg tvo tvr tvt tvy tya tyg tyo tyr tyt v-a vaa vab vag vao var vat vav vay vba vbg vbo vbr vbv vga vgg vgo vgr vgt voa vob vog voo vor vot vov voy vra vrb vrg vrr vrt vry vta vtb vtg vto vtr vtt vtv vty vva vvb vvg vvo vvr vvt vvv vyg vyt yaa yab yag yao yar yat yav yay ybg ybr yby yga ygo yob yog yoo yor yot yoy yra yrg yro yrt yta yto ytr ytt ytv yva yvo yvr yvy yyb yyg yyt yyy