a-a a-b a-i a-t aaa aab aai aan aao aar aat aav ab- aba abb abi abn abo abr abt abv ai- aia aib aii ain aio air ait aiv an- ana anb ani ann ano anr ant anv aoa aob aoi aon aoo aor aot aov ar- ara arb ari arn aro arr art arv at- ata atb ati atn ato atr att atv av- ava avb avi avn avo avr avt baa bab bai ban bao bar bat bav bba bbb bbi bbn bbo bbr bbt bi- bia bib bii bin bio bir bit biv bna bnb bni bnn bno bnr bnt bnv boa bob boi bon boo bor bot bov bra brb bri brn bro brr brt brv bta btb bti btn bto btr btt btv bva bvb bvi bvn bvo bvr bvt bvv i-v ia- iaa iab iai ian iao iar iat iav iba ibb ibi ibn ibo ibr ibt ibv iia iib iii iin iio iir iit in- ina inb ini inn ino inr int inv io- ioa iob ioi ion ioo ior iot iov ir- ira irb iri irn iro irr irt irv ita itb iti itn ito itt itv iva ivb ivi ivo ivr ivt ivv n-i naa nab nai nan nao nar nat nav nba nbb nbi nbn nbo nbr nbt nbv nia nib nii nin nio nir nit niv nna nnb nni nnn nno nnt nnv no- noa nob noi non noo nor not nov nra nrb nri nrn nro nrr nrt nrv nta ntb nti ntn nto ntr ntt ntv nva nvb nvi nvn nvt nvv o-i oaa oab oai oan oao oar oat oav ob- oba obb obi obn obo obr obt obv oia oib oii oin oio oir oit oiv on- ona onb oni onn ono onr ont oo- ooa oob ooi oon ooo oor oot oov or- ora orb ori orn oro orr ort orv ot- ota otb oti otn oto otr ott otv ov- ova ovb ovi ovo ovv ra- raa rab rai ran rao rar rat rav rba rbb rbi rbn rbo rbr rbt ria rib rii rin rio rir rit riv rna rnb rni rnn rno rnr rnt rnv roa rob roi ron roo ror rot rov rra rrb rri rrn rrr rrt rta rtb rti rtn rto rtr rtt rtv rva rvb rvi rvn rvo rvr rvt rvv taa tab tai tan tao tar tat tav tba tbb tbi tbn tbo tbr tbt tbv tia tib tii tin tio tir tit tiv tna tnb tni tnn tno tnr tnt to- toa tob toi ton too tor tot tov tra trb tri trn tro trr trt trv tta ttb tti ttn tto ttr ttt ttv tva tvb tvi tvn tvo tvr tvt v-a vaa vab vai van vao var vat vav vba vbi vbo vbr vbv vi- via vib vii vin vio vir vit viv vn- vna vni vno vnr vnv voa vob voi von voo vor vot vov vra vrb vri vrn vrr vrt vta vtb vti vto vtr vtt vtv vva vvb vvi vvo vvr vvt vvv