a-a a-c a-t aaa aac aak aao aat aaw ac- aca acc ack aco act acw aka akc akk ako akw aoa aoc aok aoo aot aow at- ata atc ato att atw aw- awa awc awk awo awt aww c-- caa cac cak cao cat caw cca ccc cck cco cct ccw cka ckc cko ckt ckw co- coa coc cok coo cot cow cta ctc ctk cto ctt ctw cw- cwa cwc cwk cwo cwt k-t ka- kaa kac kak kao kat kaw kca kcc kck kct kkc kkk kkt koa koc kok koo kot kow kta ktc ktk kto ktt ktw kw- kwa kwc kwk kwo kwt kww oaa oac oak oao oat oaw oc- oca occ ock oco oct ocw oka okc okk oko okw oo- ooa ooc ook ooo oot oow ot- ota otc otk oto ott otw owa owc owk owo owt oww taa tac tak tao tat taw tca tcc tck tco tct tcw tka tkc tkk tko tkt tkw to- toa toc tok too tot tow tta ttc ttk tto ttt ttw twa twc two twt tww waa wac wak wao wat waw wca wcc wck wco wct wcw wka wkc wko wkt wkw woa woc wok woo wot wow wta wtc wto wtt wtw wwa wwc wwo wwt www