-th a-a a-c a-t aaa aac aah aak aao aar aas aat ac- aca acc ach ack aco acr acs act aha ahc ahh ahk aho ahr ahs aht aka akc akh akk ako akr aks aoa aoc aoh aok aoo aor aos aot ar- ara arc arh ark aro arr ars art as- asa asc ash ask aso asr ass ast at- ata atc ath ato atr ats att c-- caa cac cah cak cao car cas cat cca ccc cch cck cco ccr ccs cct ch- cha chc chh chk cho chr chs cht cka ckc ckh cko cks ckt co- coa coc coh cok coo cor cos cot cra crc crh crk cro crr crs crt csa csc csh csk cso csr css cst cta ctc cth ctk cto ctr cts ctt haa hac hah hak hao har has hat hca hcc hch hck hco hcr hcs hct hha hhc hhh hhk hho hhr hhs hht hka hkh hkk hko hkr hks hkt hoa hoc hoh hok hoo hor hos hot hr- hra hrc hrh hrk hro hrr hrs hrt hsa hsc hsh hsk hsr hss hst hta htc hth htk hto htr hts htt k-t ka- kaa kac kah kak kao kar kas kat kca kcc kch kck kcr kcs kct kha khh khk kho khr khs kkc kkh kkk kkr kks kkt koa koc koh kok koo kor kos kot kra krc krk kro krr krs krt ksa ksc ksh ksk kso ksr kss kst kta ktc kth ktk kto ktr kts ktt oaa oac oah oak oao oar oas oat oc- oca occ och ock oco ocr ocs oct oha ohc ohh oho ohr ohs oht oka okc okk oko okr oks oo- ooa ooc ooh ook ooo oor oos oot or- ora orc orh ork oro orr ors ort os- osa osc osh osk oso osr oss ost ot- ota otc oth otk oto otr ots ott ra- raa rac rah rak rao rar ras rat rca rcc rch rco rcr rcs rct rh- rha rhc rhh rho rhr rhs rht rkc rkk rko rks rkt roa roc roh rok roo ror ros rot rra rrc rrh rrk rrr rrs rrt rsa rsc rsh rsk rso rsr rss rst rta rtc rtk rto rtr rts rtt saa sac sah sak sao sar sas sat sca scc sch sck sco scr scs sct sh- sha shc shh shk sho shr shs sht sk- ska skc skh skk sko skr sks skt soa soc soh sok soo sor sos sot sr- sra src srh srk sro srr srs srt ss- ssa ssc ssh ssk sso ssr sss sst sta stc sth stk sto str sts stt taa tac tah tak tao tar tas tat tca tcc tch tck tco tcr tcs tct th- tha thc thh thk tho thr ths tht tka tkc tkk tko tkr tks tkt to- toa toc toh tok too tor tos tot tra trc trh trk tro trr trs trt tsa tsc tsh tsk tso tsr tss tst tta ttc tth ttk tto ttr tts ttt