-th a-a a-c a-t aaa aac aad aah aak aao aas aat ac- aca acc acd ach ack aco acs act ad- ada adc add adh adk ado ads adt aha ahc ahd ahh ahk aho ahs aht aka akc akd akh akk ako aks aoa aoc aod aoh aok aoo aos aot as- asa asc asd ash ask aso ass ast at- ata atc atd ath ato ats att c-- caa cac cad cah cak cao cas cat cca ccc ccd cch cck cco ccs cct cda cdc cdd cdh cdk cdo cds cdt ch- cha chc chd chh chk cho chs cht cka ckc ckd ckh cko cks ckt co- coa coc cod coh cok coo cos cot csa csc csd csh csk cso css cst cta ctc ctd cth ctk cto cts ctt daa dac dad dah dak dao das dat dca dcc dcd dck dco dcs dct dda ddc ddd ddh ddk ddo dds ddt dh- dha dhc dhd dhh dhk dho dhs dht dka dkc dkk dko dks dkt doa doc dod doh dok doo dos dot dsa dsc dsd dsh dsk dso dss dst dta dtc dtd dth dtk dto dts dtt haa hac had hah hak hao has hat hca hcc hcd hch hck hco hcs hct hda hdc hdd hdh hdk hdo hds hdt hha hhc hhd hhh hhk hho hhs hht hka hkd hkh hkk hko hks hkt hoa hoc hod hoh hok hoo hos hot hsa hsc hsd hsh hsk hss hst hta htc htd hth htk hto hts htt k-t ka- kaa kac kad kah kak kao kas kat kca kcc kcd kch kck kcs kct kda kdc kdh kdk kdo kds kdt kha khh khk kho khs kkc kkh kkk kks kkt koa koc kod koh kok koo kos kot ksa ksc ksd ksh ksk kso kss kst kta ktc kth ktk kto kts ktt oaa oac oad oah oak oao oas oat oc- oca occ ocd och ock oco ocs oct oda odc odd odh odo ods odt oha ohc ohd ohh oho ohs oht oka okc okd okk oko oks oo- ooa ooc ood ooh ook ooo oos oot os- osa osc osd osh osk oso oss ost ot- ota otc otd oth otk oto ots ott saa sac sad sah sak sao sas sat sca scc scd sch sck sco scs sct sda sdc sdd sdh sdk sdo sds sdt sh- sha shc shd shh shk sho shs sht sk- ska skc skd skh skk sko sks skt soa soc sod soh sok soo sos sot ss- ssa ssc ssd ssh ssk sso sss sst sta stc std sth stk sto sts stt taa tac tad tah tak tao tas tat tca tcc tcd tch tck tco tcs tct tda tdc tdd tdh tdk tdo tds tdt th- tha thc thd thh thk tho ths tht tka tkc tkk tko tks tkt to- toa toc tod toh tok too tos tot tsa tsc tsd tsh tsk tso tss tst tta ttc ttd tth ttk tto tts ttt