a-a a-c aaa aac aad aak aao aaw ac- aca acc acd ack aco acw ad- ada adc add adk ado adw aka akc akd akk ako akw aoa aoc aod aok aoo aow aw- awa awc awd awk awo aww c-- caa cac cad cak cao caw cca ccc ccd cck cco ccw cda cdc cdd cdk cdo cdw cka ckc ckd cko ckw co- coa coc cod cok coo cow cw- cwa cwc cwd cwk cwo daa dac dad dak dao daw dca dcc dcd dck dco dcw dda ddc ddd ddk ddo ddw dka dkc dkk dko dkw doa doc dod dok doo dow dwa dwc dwo dww ka- kaa kac kad kak kao kaw kca kcc kcd kck kda kdc kdk kdo kkc kkk koa koc kod kok koo kow kw- kwa kwc kwd kwk kwo kww oaa oac oad oak oao oaw oc- oca occ ocd ock oco ocw oda odc odd odo oka okc okd okk oko okw oo- ooa ooc ood ook ooo oow owa owc owd owk owo oww waa wac wad wak wao waw wca wcc wcd wck wco wcw wda wdc wka wkc wkd wko wkw woa woc wod wok woo wow wwa wwc wwd wwo www