a-a a-b a-i a-t a-z aaa aab aad aai aat aaz ab- aba abb abd abi abt abz ad- ada adb add adi adt adz ai- aia aib aid aii ait aiz at- ata atb atd ati att atz az- aza azb azd azi azt azz baa bab bad bai bat baz bba bbb bbd bbi bbt bda bdb bdd bdi bdt bdz bi- bia bib bid bii bit biz bta btb btd bti btt btz bza bzd bzz daa dab dad dai dat daz dba dbb dbd dbi dbt dbz dda ddb ddd ddi ddt ddz di- dia dib did dii dit diz dta dtb dtd dti dtt dtz dza dzb dzd dzi i-d ia- iaa iab iad iai iat iaz iba ibb ibd ibi ibt ibz ida idb idd idi idt iia iib iid iii iit ita itb itd iti itt itz iza izi izz taa tab tad tai tat taz tba tbb tbd tbi tbt tbz tda tdb tdd tdi tdt tia tib tid tii tit tiz tta ttb ttd tti ttt tza tzd zaa zab zad zai zat zaz zbb zbt zdt zia zib zid zit ziz zta zzt zzz