a-a a-b a-i a-t aaa aab aag aai aao aar aat aav aay ab- aba abb abg abi abo abr abt abv aby ag- aga agb agg agi ago agr agt agv agy ai- aia aib aig aii aio air ait aiv aiy aoa aob aog aoi aoo aor aot aov ar- ara arb arg ari aro arr art arv ary at- ata atb atg ati ato atr att atv av- ava avb avg avi avo avr avt avy ay- aya ayi ayo ayr ayt baa bab bag bai bao bar bat bav bay bba bbb bbg bbi bbo bbr bbt bby bga bgb bgg bgi bgo bgr bgt bgv bi- bia bib big bii bio bir bit biv biy boa bob bog boi boo bor bot bov boy bra brb brg bri bro brr brt brv bry bta btb btg bti bto btr btt btv bty bva bvb bvg bvi bvo bvr bvt bvv by- bya byg byi byo byr byt gaa gab gag gai gao gar gat gav gay gba gbg gbi gbo gbr gbt gbv gby gga ggb ggg ggi ggo ggr ggt ggv gia gib gig gii gio gir git giv giy goa gob gog goi goo gor got gov goy gra grb grg gri gro grr grt grv gry gta gtb gtg gti gto gtr gtt gtv gty gva gvb gvg gvi gvo gvr gvt gy- gya gyb gyo gyr i-v ia- iaa iab iag iai iao iar iat iav iba ibb ibg ibi ibo ibr ibt ibv iby iga igb igg igi igo igr igt igy iia iib iii iio iir iit io- ioa iob iog ioi ioo ior iot iov ir- ira irb irg iri iro irr irt irv iry ita itb itg iti ito itt itv ity iva ivb ivg ivi ivo ivr ivt ivv ivy iya iyo iyr iyt iyy o-i oaa oab oag oai oao oar oat oav ob- oba obb obg obi obo obr obt obv oby oga ogg ogi ogo ogt ogy oia oib oii oio oir oit oiv oo- ooa oob oog ooi ooo oor oot oov or- ora orb org ori oro orr ort orv ory ot- ota otb otg oti oto otr ott otv ov- ova ovb ovi ovo ovv oya oyi oyo ra- raa rab rag rai rao rar rat rav ray rba rbb rbg rbi rbo rbr rbt rga rgb rgg rgi rgo rgr rgt rgv ria rib rig rii rio rir rit riv riy roa rob rog roi roo ror rot rov roy rra rrb rrg rri rrr rrt rta rtb rtg rti rto rtr rtt rtv rty rva rvb rvg rvi rvo rvr rvt rvv rvy ry- rya ryg ryo ryr ryy taa tab tag tai tao tar tat tav tay tba tbb tbg tbi tbo tbr tbt tbv tga tgb tgg tgi tgo tgr tgt tgv tgy tia tib tig tii tio tir tit tiv tiy to- toa tob tog toi too tor tot tov toy tra trb trg tri tro trr trt trv try tta ttb ttg tti tto ttr ttt ttv tty tva tvb tvg tvi tvo tvr tvt tvy tya tyg tyo tyr tyt v-a vaa vab vag vai vao var vat vav vay vba vbg vbi vbo vbr vbv vga vgg vgo vgr vgt vi- via vib vig vii vio vir vit viv viy voa vob vog voi voo vor vot vov voy vra vrb vrg vri vrr vrt vry vta vtb vtg vti vto vtr vtt vtv vty vva vvb vvg vvi vvo vvr vvt vvv vyg vyt yaa yab yag yai yao yar yat yav yay ybg ybi ybr yby yga ygo yig yii yio yir yit yob yog yoi yoo yor yot yoy yra yrg yro yrt yta yto ytr ytt ytv yva yvi yvo yvr yvy yyb yyg yyt yyy