a-a a-b a-i a-t aaa aab aai aak aan aat ab- aba abb abi abk abn abt ai- aia aib aii aik ain ait aka akb aki akk akn an- ana anb ani ank ann ant at- ata atb ati atn att baa bab bai bak ban bat bba bbb bbi bbk bbn bbt bi- bia bib bii bik bin bit bka bkb bkk bkn bkt bna bnb bni bnk bnn bnt bta btb bti btk btn btt ia- iaa iab iai ian iat iba ibb ibi ibk ibn ibt iia iib iii iin iit ika ikb iki ikk ikt in- ina inb ini ink inn int ita itb iti itk itn itt k-t ka- kaa kab kai kak kan kat kba kbb kbi kbk kbn kia kib kii kik kin kit kkb kki kkk kkn kkt kn- kna kni knk knn knt kta ktb ktk ktn ktt n-i naa nab nai nak nan nat nba nbb nbi nbk nbn nbt nia nib nii nik nin nit nka nki nkk nkn nkt nna nnb nni nnk nnn nnt nta ntb nti ntk ntn ntt taa tab tai tak tan tat tba tbb tbi tbk tbn tbt tia tib tii tik tin tit tka tkb tkk tkt tna tnb tni tnk tnn tnt tta ttb tti ttk ttn ttt