-er -th a-a a-c a-t aaa aac aae aah aak aao aar aat ac- aca acc ace ach ack aco acr act aea aec aee aeh aek aeo aer aet aha ahc ahe ahh ahk aho ahr aht aka akc ake akh akk ako akr aoa aoc aoe aoh aok aoo aor aot ar- ara arc are arh ark aro arr art at- ata atc ate ath ato atr att c-- caa cac cae cah cak cao car cat cca ccc cce cch cck cco ccr cct ce- cea cec cee ceh cek ceo cer cet ch- cha chc che chh chk cho chr cht cka ckc ckh cko ckt co- coa coc coe coh cok coo cor cot cra crc cre crh crk cro crr crt cta ctc cte cth ctk cto ctr ctt eaa eac eae eah eak eao ear eat ec- eca ecc ece ech eck eco ecr ect eea eec eee eek eeo eer eet eha ehc ehe ehh eho ehr eht eka ekc eke ekh eko ekr ekt eo- eoa eoc eoe eoh eok eoo eor eot era erc ere erh erk ero err ert eta etc ete eth etk eto etr ett haa hac hae hah hak hao har hat hca hcc hce hch hck hco hcr hct he- hea hec hee heh hek heo her het hha hhc hhe hhh hhk hho hhr hht hka hkh hkk hko hkr hkt hoa hoc hoe hoh hok hoo hor hot hr- hra hrc hre hrh hrk hro hrr hrt hta htc hte hth htk hto htr htt k-t ka- kaa kac kae kah kak kao kar kat kca kcc kce kch kck kcr kct ke- kea kec kee keh kek keo ker ket kha khe khh khk kho khr kkc kke kkh kkk kkr kkt koa koc koe koh kok koo kor kot kra krc krk kro krr krt kta ktc kte kth ktk kto ktr ktt oaa oac oae oah oak oao oar oat oc- oca occ och ock oco ocr oct oea oec oee oeh oeo oer oet oha ohc ohe ohh oho ohr oht oka okc oke okk oko okr oo- ooa ooc ooh ook ooo oor oot or- ora orc ore orh ork oro orr ort ot- ota otc ote oth otk oto otr ott ra- raa rac rae rah rak rao rar rat rca rcc rce rch rco rcr rct re- rea rec ree reh rek reo rer ret rh- rha rhc rhe rhh rho rhr rht rkc rke rkk rko rkt roa roc roe roh rok roo ror rot rra rrc rrh rrk rrr rrt rta rtc rte rtk rto rtr rtt taa tac tae tah tak tao tar tat tca tcc tce tch tck tco tcr tct te- tea tec tee teh tek teo ter tet th- tha thc the thh thk tho thr tht tka tkc tke tkk tko tkr tkt to- toa toc toe toh tok too tor tot tra trc tre trh trk tro trr trt tta ttc tte tth ttk tto ttr ttt