-er -th a-a a-b a-c a-t aaa aab aac aae aaf aah aar aat ab- aba abb abc abe abf abh abr abt ac- aca acb acc ace acf ach acr act aea aeb aec aee aef aeh aer aet af- afa afb afc afe aff afh afr aft aha ahb ahc ahe ahf ahh ahr aht ar- ara arb arc are arf arh arr art at- ata atb atc ate atf ath atr att baa bab bac bae baf bah bar bat bba bbb bbc bbe bbf bbh bbr bbt bca bcb bcc bce bcf bch bcr bct be- bea beb bec bee bef beh ber bet bfa bfb bfc bfe bff bfh bfr bft bha bhb bhc bhe bhf bhh bhr bht bra brb bre brf brh brr brt bta btb btc bte btf bth btr btt c-- caa cab cac cae caf cah car cat cba cbb cbc cbe cbf cbh cbr cbt cca ccb ccc cce ccf cch ccr cct ce- cea ceb cec cee cef ceh cer cet cfa cfb cfc cfe cff cfh cfr cft ch- cha chb chc che chf chh chr cht cra crb crc cre crf crh crr crt cta ctb ctc cte ctf cth ctr ctt eaa eab eac eae eaf eah ear eat eba ebb ebc ebe ebf ebh ebr ebt ec- eca ecb ecc ece ecf ech ecr ect eea eeb eec eee eef eer eet ef- efa efb efc efe eff efh efr eft eha ehb ehc ehe ehf ehh ehr eht era erb erc ere erf erh err ert eta etb etc ete etf eth etr ett faa fab fac fae faf fah far fat fba fbb fbc fbe fbf fbh fbr fbt fca fcb fcc fce fcf fcr fct fea feb fec fee fef feh fer fet ffa ffc ffe fff ffh ffr fft fha fhb fhc fhe fhf fhh fhr fra frb frc fre frf frh frr frt fta ftb ftc fte ftf fth ftr ftt haa hab hac hae haf hah har hat hba hbb hbc hbe hbf hbh hbr hbt hca hcb hcc hce hcf hch hcr hct he- hea heb hec hee hef heh her het hfa hfb hfc hfe hff hfh hfr hft hha hhb hhc hhe hhf hhh hhr hht hr- hra hrb hrc hre hrf hrh hrr hrt hta htb htc hte htf hth htr htt ra- raa rab rac rae raf rah rar rat rba rbb rbc rbe rbf rbh rbr rbt rca rcb rcc rce rcf rch rcr rct re- rea reb rec ree ref reh rer ret rfa rfb rfc rfe rff rfh rfr rft rh- rha rhb rhc rhe rhf rhh rhr rht rra rrb rrc rrf rrh rrr rrt rta rtb rtc rte rtf rtr rtt taa tab tac tae taf tah tar tat tba tbb tbc tbe tbf tbh tbr tbt tca tcb tcc tce tcf tch tcr tct te- tea teb tec tee tef teh ter tet tfa tfb tfc tfe tff tfh tfr tft th- tha thb thc the thf thh thr tht tra trb trc tre trf trh trr trt tta ttb ttc tte ttf tth ttr ttt