-er -th a-a a-b a-i a-t aaa aab aad aae aah aai aar aas aat ab- aba abb abd abe abh abi abr abs abt ad- ada adb add ade adh adi adr ads adt aea aeb aed aee aeh aei aer aes aet aha ahb ahd ahe ahh ahi ahr ahs aht ai- aia aib aid aie aih aii air ais ait ar- ara arb ard are arh ari arr ars art as- asa asb asd ase ash asi asr ass ast at- ata atb atd ate ath ati atr ats att baa bab bad bae bah bai bar bas bat bba bbb bbd bbe bbh bbi bbr bbs bbt bda bdb bdd bde bdh bdi bdr bds bdt be- bea beb bed bee beh bei ber bes bet bha bhb bhd bhe bhh bhi bhr bhs bht bi- bia bib bid bie bih bii bir bis bit bra brb brd bre brh bri brr brs brt bsa bsb bsd bse bsh bsi bsr bss bst bta btb btd bte bth bti btr bts btt daa dab dad dae dah dai dar das dat dba dbb dbd dbe dbh dbi dbr dbs dbt dda ddb ddd dde ddh ddi ddr dds ddt de- dea deb ded dee deh dei der des det dh- dha dhb dhd dhe dhh dhi dhr dhs dht di- dia dib did die dih dii dir dis dit dra drb drd dre dri drr drs drt dsa dsb dsd dse dsh dsi dsr dss dst dta dtb dtd dte dth dti dtr dts dtt eaa eab ead eae eah eai ear eas eat eba ebb ebd ebe ebh ebi ebr ebs ebt ed- eda edb edd ede edh edi edr eds edt eea eeb eed eee eer ees eet eha ehb ehd ehe ehh ehi ehr ehs eht eia eib eid eie eii eir eis eit era erb erd ere erh eri err ers ert es- esa esb esd ese esh esi esr ess est eta etb etd ete eth eti etr ets ett h-i haa hab had hae hah hai har has hat hba hbb hbd hbe hbh hbi hbr hbs hbt hda hdb hdd hde hdh hdi hdr hds hdt he- hea heb hed hee heh hei her hes het hha hhb hhd hhe hhh hhi hhr hhs hht hia hib hid hie hih hii hir his hit hr- hra hrb hrd hre hrh hri hrr hrs hrt hsa hsb hsd hse hsh hsi hsr hss hst hta htb htd hte hth hti htr hts htt i-d ia- iaa iab iad iae iah iai iar ias iat iba ibb ibd ibe ibh ibi ibr ibs ibt ida idb idd ide idh idi idr ids idt ie- iea ied iee iei ier ies iet iha ihb ihd ihe ihh ihi ihr ihs iht iia iib iid iie iih iii iir iis iit ir- ira irb ird ire iri irr irs irt is- isa isb isd ise ish isi isr iss ist ita itb itd ite ith iti its itt ra- raa rab rad rae rah rai rar ras rat rba rbb rbd rbe rbh rbi rbr rbs rbt rda rdb rdd rde rdh rdi rdr rds rdt re- rea reb red ree reh rei rer res ret rh- rha rhb rhd rhe rhh rhi rhr rhs rht ria rib rid rie rih rii rir ris rit rra rrb rrd rrh rri rrr rrs rrt rsa rsb rsd rse rsh rsi rsr rss rst rta rtb rtd rte rti rtr rts rtt saa sab sad sae sah sai sar sas sat sba sbb sbd sbe sbh sbi sbr sbs sbt sda sdb sdd sde sdh sdi sdr sds sdt se- sea seb sed see seh sei ser ses set sh- sha shb shd she shh shi shr shs sht sia sib sid sie sih sii sir sis sit sr- sra srb srd sre srh sri srr srs srt ss- ssa ssb ssd sse ssh ssi ssr sss sst sta stb std ste sth sti str sts stt taa tab tad tae tah tai tar tas tat tba tbb tbd tbe tbh tbi tbr tbs tbt tda tdb tdd tde tdh tdi tdr tds tdt te- tea teb ted tee teh tei ter tes tet th- tha thb thd the thh thi thr ths tht tia tib tid tie tih tii tir tis tit tra trb trd tre trh tri trr trs trt tsa tsb tsd tse tsh tsi tsr tss tst tta ttb ttd tte tth tti ttr tts ttt