a-a a-b a-i aaa aab aag aai aak aan ab- aba abb abg abi abk abn ag- aga agb agg agi agk agn ai- aia aib aig aii aik ain aka akb akg aki akk akn an- ana anb ang ani ank ann baa bab bag bai bak ban bba bbb bbg bbi bbk bbn bga bgb bgg bgi bgk bgn bi- bia bib big bii bik bin bka bkb bkg bkk bkn bna bnb bng bni bnk bnn gaa gab gag gai gak gan gba gbg gbi gbk gbn gga ggb ggg ggi ggn gia gib gig gii gik gin gka gkb gkn gna gnb gni gnn ia- iaa iab iag iai ian iba ibb ibg ibi ibk ibn iga igb igg igi igk ign iia iib iii iin ika ikb iki ikk in- ina inb ing ini ink inn ka- kaa kab kag kai kak kan kba kbb kbi kbk kbn kga kgb kgi kia kib kig kii kik kin kkb kki kkk kkn kn- kna kng kni knk knn n-i naa nab nag nai nak nan nba nbb nbg nbi nbk nbn nga ngb ngg ngi ngk ngn nia nib nig nii nik nin nka nki nkk nkn nna nnb nng nni nnk nnn