-er -th a-a a-c a-t aaa aac aae aah aao aar aat ac- aca acc ace ach aco acr act aea aec aee aeh aeo aer aet aha ahc ahe ahh aho ahr aht aoa aoc aoe aoh aoo aor aot ar- ara arc are arh aro arr art at- ata atc ate ath ato atr att c-- caa cac cae cah cao car cat cca ccc cce cch cco ccr cct ce- cea cec cee ceh ceo cer cet ch- cha chc che chh cho chr cht co- coa coc coe coh coo cor cot cra crc cre crh cro crr crt cta ctc cte cth cto ctr ctt eaa eac eae eah eao ear eat ec- eca ecc ece ech eco ecr ect eea eec eee eeo eer eet eha ehc ehe ehh eho ehr eht eo- eoa eoc eoe eoh eoo eor eot era erc ere erh ero err ert eta etc ete eth eto etr ett haa hac hae hah hao har hat hca hcc hce hch hco hcr hct he- hea hec hee heh heo her het hha hhc hhe hhh hho hhr hht hoa hoc hoe hoh hoo hor hot hr- hra hrc hre hrh hro hrr hrt hta htc hte hth hto htr htt oaa oac oae oah oao oar oat oc- oca occ och oco ocr oct oea oec oee oeh oeo oer oet oha ohc ohe ohh oho ohr oht oo- ooa ooc ooh ooo oor oot or- ora orc ore orh oro orr ort ot- ota otc ote oth oto otr ott ra- raa rac rae rah rao rar rat rca rcc rce rch rco rcr rct re- rea rec ree reh reo rer ret rh- rha rhc rhe rhh rho rhr rht roa roc roe roh roo ror rot rra rrc rrh rrr rrt rta rtc rte rto rtr rtt taa tac tae tah tao tar tat tca tcc tce tch tco tcr tct te- tea tec tee teh teo ter tet th- tha thc the thh tho thr tht to- toa toc toe toh too tor tot tra trc tre trh tro trr trt tta ttc tte tth tto ttr ttt