a-a a-b a-i a-t aaa aab aad aai aak aat ab- aba abb abd abi abk abt ad- ada adb add adi adk adt ai- aia aib aid aii aik ait aka akb akd aki akk at- ata atb atd ati att baa bab bad bai bak bat bba bbb bbd bbi bbk bbt bda bdb bdd bdi bdk bdt bi- bia bib bid bii bik bit bka bkb bkk bkt bta btb btd bti btk btt daa dab dad dai dak dat dba dbb dbd dbi dbk dbt dda ddb ddd ddi ddk ddt di- dia dib did dii dik dit dka dkb dki dkk dkt dta dtb dtd dti dtk dtt i-d ia- iaa iab iad iai iat iba ibb ibd ibi ibk ibt ida idb idd idi idk idt iia iib iid iii iit ika ikb iki ikk ikt ita itb itd iti itk itt k-t ka- kaa kab kad kai kak kat kba kbb kbd kbi kbk kda kdb kdk kdt kia kib kid kii kik kit kkb kki kkk kkt kta ktb ktk ktt taa tab tad tai tak tat tba tbb tbd tbi tbk tbt tda tdb tdd tdi tdk tdt tia tib tid tii tik tit tka tkb tkk tkt tta ttb ttd tti ttk ttt