a-a a-b aaa aab aag aan aao aar aav aay ab- aba abb abg abn abo abr abv aby ag- aga agb agg agn ago agr agv agy an- ana anb ang ann ano anr anv any aoa aob aog aon aoo aor aov ar- ara arb arg arn aro arr arv ary av- ava avb avg avn avo avr avy ay- aya ayn ayo ayr baa bab bag ban bao bar bav bay bba bbb bbg bbn bbo bbr bby bga bgb bgg bgn bgo bgr bgv bna bnb bng bnn bno bnr bnv boa bob bog bon boo bor bov boy bra brb brg brn bro brr brv bry bva bvb bvg bvn bvo bvr bvv by- bya byg byn byo byr gaa gab gag gan gao gar gav gay gba gbg gbn gbo gbr gbv gby gga ggb ggg ggn ggo ggr ggv gna gnb gnn gno gnr gnv goa gob gog gon goo gor gov goy gra grb grg grn gro grr grv gry gva gvb gvg gvn gvo gvr gy- gya gyb gyn gyo gyr naa nab nag nan nao nar nav nay nba nbb nbg nbn nbo nbr nbv nga ngb ngg ngn ngo nna nnb nng nnn nno nnv no- noa nob nog non noo nor nov noy nra nrb nrg nrn nro nrr nrv nry nva nvb nvg nvn nvv nya nyg nyn nyo nyy oaa oab oag oan oao oar oav ob- oba obb obg obn obo obr obv oby oga ogg ogn ogo ogy on- ona onb ong onn ono onr ony oo- ooa oob oog oon ooo oor oov or- ora orb org orn oro orr orv ory ov- ova ovb ovo ovv oya oyo ra- raa rab rag ran rao rar rav ray rba rbb rbg rbn rbo rbr rga rgb rgg rgn rgo rgr rgv rna rnb rng rnn rno rnr rnv rny roa rob rog ron roo ror rov roy rra rrb rrg rrn rrr rva rvb rvg rvn rvo rvr rvv rvy ry- rya ryg ryn ryo ryr ryy v-a vaa vab vag van vao var vav vay vba vbg vbo vbr vbv vga vgg vgn vgo vgr vn- vna vng vno vnr vnv voa vob vog von voo vor vov voy vra vrb vrg vrn vrr vry vva vvb vvg vvo vvr vvv vyg vyn yaa yab yag yan yao yar yav yay ybg ybr yby yga ygo yna yng ynn yny yob yog yon yoo yor yoy yra yrg yrn yro yva yvo yvr yvy yyb yyg yyy