a-a a-c aaa aac aak aan aao aaw ac- aca acc ack acn aco acw aka akc akk akn ako akw an- ana anc ank ann ano aoa aoc aok aon aoo aow aw- awa awc awk awn awo aww c-- caa cac cak can cao caw cca ccc cck ccn cco ccw cka ckc cko ckw cn- cna cnc cnn cno cnw co- coa coc cok con coo cow cw- cwa cwc cwk cwn cwo ka- kaa kac kak kan kao kaw kca kcc kck kcn kkc kkk kkn kn- kna knc knk knn kno koa koc kok kon koo kow kw- kwa kwc kwk kwo kww naa nac nak nan nao naw nca ncc nck ncn nco ncw nka nkc nkk nkn nko nna nnc nnk nnn nno nnw no- noa noc nok non noo now nwa nwc nwn nwo oaa oac oak oan oao oaw oc- oca occ ock ocn oco ocw oka okc okk oko okw on- ona onc onk onn ono oo- ooa ooc ook oon ooo oow owa owc owk own owo oww waa wac wak wan wao waw wca wcc wck wcn wco wcw wka wkc wko wkw wn- wna wnc wnn wno wnw woa woc wok won woo wow wwa wwc wwn wwo www