a-a a-b a-i a-t aaa aab aai aan aat aav ab- aba abb abi abn abt abv ai- aia aib aii ain ait aiv an- ana anb ani ann ant anv at- ata atb ati atn att atv av- ava avb avi avn avt baa bab bai ban bat bav bba bbb bbi bbn bbt bi- bia bib bii bin bit biv bna bnb bni bnn bnt bnv bta btb bti btn btt btv bva bvb bvi bvn bvt bvv i-v ia- iaa iab iai ian iat iav iba ibb ibi ibn ibt ibv iia iib iii iin iit in- ina inb ini inn int inv ita itb iti itn itt itv iva ivb ivi ivt ivv n-i naa nab nai nan nat nav nba nbb nbi nbn nbt nbv nia nib nii nin nit niv nna nnb nni nnn nnt nnv nta ntb nti ntn ntt ntv nva nvb nvi nvn nvt nvv taa tab tai tan tat tav tba tbb tbi tbn tbt tbv tia tib tii tin tit tiv tna tnb tni tnn tnt tta ttb tti ttn ttt ttv tva tvb tvi tvn tvt v-a vaa vab vai van vat vav vba vbi vbv vi- via vib vii vin vit viv vn- vna vni vnv vta vtb vti vtt vtv vva vvb vvi vvt vvv