-th a-a a-c a-t aaa aac aah aak aao aar aat ac- aca acc ach ack aco acr act aha ahc ahh ahk aho ahr aht aka akc akh akk ako akr aoa aoc aoh aok aoo aor aot ar- ara arc arh ark aro arr art at- ata atc ath ato atr att c-- caa cac cah cak cao car cat cca ccc cch cck cco ccr cct ch- cha chc chh chk cho chr cht cka ckc ckh cko ckt co- coa coc coh cok coo cor cot cra crc crh crk cro crr crt cta ctc cth ctk cto ctr ctt haa hac hah hak hao har hat hca hcc hch hck hco hcr hct hha hhc hhh hhk hho hhr hht hka hkh hkk hko hkr hkt hoa hoc hoh hok hoo hor hot hr- hra hrc hrh hrk hro hrr hrt hta htc hth htk hto htr htt k-t ka- kaa kac kah kak kao kar kat kca kcc kch kck kcr kct kha khh khk kho khr kkc kkh kkk kkr kkt koa koc koh kok koo kor kot kra krc krk kro krr krt kta ktc kth ktk kto ktr ktt oaa oac oah oak oao oar oat oc- oca occ och ock oco ocr oct oha ohc ohh oho ohr oht oka okc okk oko okr oo- ooa ooc ooh ook ooo oor oot or- ora orc orh ork oro orr ort ot- ota otc oth otk oto otr ott ra- raa rac rah rak rao rar rat rca rcc rch rco rcr rct rh- rha rhc rhh rho rhr rht rkc rkk rko rkt roa roc roh rok roo ror rot rra rrc rrh rrk rrr rrt rta rtc rtk rto rtr rtt taa tac tah tak tao tar tat tca tcc tch tck tco tcr tct th- tha thc thh thk tho thr tht tka tkc tkk tko tkr tkt to- toa toc toh tok too tor tot tra trc trh trk tro trr trt tta ttc tth ttk tto ttr ttt