a-a a-t aaa aaf aak aan aat af- afa aff afk afn aft aka akk akn an- ana anf ank ann ant at- ata atf atn att faa faf fak fan fat ffa fff ffk ffn fft fka fkf fkk fkt fna fnf fnk fnn fnt fta ftf ftk ftn ftt k-t ka- kaa kaf kak kan kat kfa kff kkk kkn kkt kn- kna knf knk knn knt kta ktf ktk ktn ktt naa naf nak nan nat nfa nff nfk nfn nft nka nkf nkk nkn nkt nna nnf nnk nnn nnt nta ntf ntk ntn ntt taa taf tak tan tat tfa tff tfk tfn tft tka tkk tkt tna tnf tnk tnn tnt tta ttf ttk ttn ttt