a-a aaa aak aan aao aax aay aka akk akn ako an- ana ank ann ano anx any aoa aok aon aoo aox ax- axa axk axn axo axx ay- aya ayk ayn ayo ayx ka- kaa kak kan kao kax kay kkk kkn kky kn- kna knk knn kno knx koa kok kon koo koy kxo kxy kya kyn kyo kyx naa nak nan nao nax nay nka nkk nkn nko nky nna nnk nnn nno no- noa nok non noo nox noy nya nyk nyn nyo nyx nyy oaa oak oan oao oax oka okk oko on- ona onk onn ono onx ony oo- ooa ook oon ooo oox ox- oxa oxn oxo oxx oxy oya oyo xaa xak xan xna xnk xno xoa xok xon xoo xox xxo xxx xxy xyy yaa yak yan yao yax yay yka ykk ykn yna ynk ynn yny yok yon yoo yox yoy yxa yxy yyy