a-a a-b a-i a-t aaa aab aad aai aam aat ab- aba abb abd abi abm abt ad- ada adb add adi adm adt ai- aia aib aid aii aim ait ama amb amd ami amm amt at- ata atb atd ati atm att baa bab bad bai bam bat bba bbb bbd bbi bbm bbt bda bdb bdd bdi bdm bdt bi- bia bib bid bii bim bit bma bmb bmd bmi bmm bmt bta btb btd bti btm btt daa dab dad dai dam dat dba dbb dbd dbi dbm dbt dda ddb ddd ddi ddm ddt di- dia dib did dii dim dit dma dmb dmd dmi dmm dmt dta dtb dtd dti dtm dtt i-d ia- iaa iab iad iai iam iat iba ibb ibd ibi ibm ibt ida idb idd idi idm idt iia iib iid iii iim iit im- ima imb imd imi imm imt ita itb itd iti itm itt maa mab mad mai mam mat mba mbb mbd mbi mbm mbt mda mdb mdd mdi mdm mdt mi- mia mib mid mii mim mit mma mmb mmd mmi mmm mmt mta mtb mtd mti mtm mtt taa tab tad tai tam tat tba tbb tbd tbi tbm tbt tda tdb tdd tdi tdm tdt tia tib tid tii tim tit tma tmb tmd tmi tmm tmt tta ttb ttd tti ttm ttt