a-a a-c aaa aac aak aao aaw ac- aca acc ack aco acw aka akc akk ako akw aoa aoc aok aoo aow aw- awa awc awk awo aww c-- caa cac cak cao caw cca ccc cck cco ccw cka ckc cko ckw co- coa coc cok coo cow cw- cwa cwc cwk cwo ka- kaa kac kak kao kaw kca kcc kck kkc kkk koa koc kok koo kow kw- kwa kwc kwk kwo kww oaa oac oak oao oaw oc- oca occ ock oco ocw oka okc okk oko okw oo- ooa ooc ook ooo oow owa owc owk owo oww waa wac wak wao waw wca wcc wck wco wcw wka wkc wko wkw woa woc wok woo wow wwa wwc wwo www