a-a a-b a-z aaa aab aak aan aaw aaz ab- aba abb abk abn abw abz aka akb akk akn akw an- ana anb ank ann anz aw- awa awb awk awn aww az- aza azb azn azw azz baa bab bak ban baw baz bba bbb bbk bbn bbw bka bkb bkk bkn bkw bna bnb bnk bnn bnw bnz bwa bwb bwk bza bzn bzz k-z ka- kaa kab kak kan kaw kaz kba kbb kbk kbn kbw kbz kkb kkk kkn kn- kna knk knn kw- kwa kwk kww kzw naa nab nak nan naw naz nba nbb nbk nbn nbw nka nkk nkn nna nnb nnk nnn nnw nnz nwa nwb nwn nzb nzz waa wab wak wan waw waz wba wbb wbn wbw wbz wka wkb wkw wn- wna wnn wnw wwa wwn www zaa zab zak zan zaz zbb zbw zka znn zzz