a-a a-b a-i a-t aaa aab aad aai aat aav ab- aba abb abd abi abt abv ad- ada adb add adi adt adv ai- aia aib aid aii ait aiv at- ata atb atd ati att atv av- ava avb avd avi avt baa bab bad bai bat bav bba bbb bbd bbi bbt bda bdb bdd bdi bdt bdv bi- bia bib bid bii bit biv bta btb btd bti btt btv bva bvb bvd bvi bvt bvv daa dab dad dai dat dav dba dbb dbd dbi dbt dbv dda ddb ddd ddi ddt di- dia dib did dii dit div dta dtb dtd dti dtt dtv dva dvb dvd dvi dvt i-d i-v ia- iaa iab iad iai iat iav iba ibb ibd ibi ibt ibv ida idb idd idi idt idv iia iib iid iii iit ita itb itd iti itt itv iva ivb ivd ivi ivt ivv taa tab tad tai tat tav tba tbb tbd tbi tbt tbv tda tdb tdd tdi tdt tdv tia tib tid tii tit tiv tta ttb ttd tti ttt ttv tva tvb tvd tvi tvt v-a vaa vab vad vai vat vav vba vbd vbi vbv vdb vdd vdi vdt vdv vi- via vib vid vii vit viv vta vtb vti vtt vtv vva vvb vvi vvt vvv