a-a a-b a-i a-t aaa aab aai aao aar aat aav aay ab- aba abb abi abo abr abt abv aby ai- aia aib aii aio air ait aiv aiy aoa aob aoi aoo aor aot aov ar- ara arb ari aro arr art arv ary at- ata atb ati ato atr att atv av- ava avb avi avo avr avt avy ay- aya ayi ayo ayr ayt baa bab bai bao bar bat bav bay bba bbb bbi bbo bbr bbt bby bi- bia bib bii bio bir bit biv biy boa bob boi boo bor bot bov boy bra brb bri bro brr brt brv bry bta btb bti bto btr btt btv bty bva bvb bvi bvo bvr bvt bvv by- bya byi byo byr byt i-v ia- iaa iab iai iao iar iat iav iba ibb ibi ibo ibr ibt ibv iby iia iib iii iio iir iit io- ioa iob ioi ioo ior iot iov ir- ira irb iri iro irr irt irv iry ita itb iti ito itt itv ity iva ivb ivi ivo ivr ivt ivv ivy iya iyo iyr iyt iyy o-i oaa oab oai oao oar oat oav ob- oba obb obi obo obr obt obv oby oia oib oii oio oir oit oiv oo- ooa oob ooi ooo oor oot oov or- ora orb ori oro orr ort orv ory ot- ota otb oti oto otr ott otv ov- ova ovb ovi ovo ovv oya oyi oyo ra- raa rab rai rao rar rat rav ray rba rbb rbi rbo rbr rbt ria rib rii rio rir rit riv riy roa rob roi roo ror rot rov roy rra rrb rri rrr rrt rta rtb rti rto rtr rtt rtv rty rva rvb rvi rvo rvr rvt rvv rvy ry- rya ryo ryr ryy taa tab tai tao tar tat tav tay tba tbb tbi tbo tbr tbt tbv tia tib tii tio tir tit tiv tiy to- toa tob toi too tor tot tov toy tra trb tri tro trr trt trv try tta ttb tti tto ttr ttt ttv tty tva tvb tvi tvo tvr tvt tvy tya tyo tyr tyt v-a vaa vab vai vao var vat vav vay vba vbi vbo vbr vbv vi- via vib vii vio vir vit viv viy voa vob voi voo vor vot vov voy vra vrb vri vrr vrt vry vta vtb vti vto vtr vtt vtv vty vva vvb vvi vvo vvr vvt vvv vyt yaa yab yai yao yar yat yav yay ybi ybr yby yii yio yir yit yob yoi yoo yor yot yoy yra yro yrt yta yto ytr ytt ytv yva yvi yvo yvr yvy yyb yyt yyy