-er -th a-a a-b a-c a-t aaa aab aac aad aae aah aak aar aas aat ab- aba abb abc abd abe abh abk abr abs abt ac- aca acb acc acd ace ach ack acr acs act ad- ada adb adc add ade adh adk adr ads adt aea aeb aec aed aee aeh aek aer aes aet aha ahb ahc ahd ahe ahh ahk ahr ahs aht aka akb akc akd ake akh akk akr aks ar- ara arb arc ard are arh ark arr ars art as- asa asb asc asd ase ash ask asr ass ast at- ata atb atc atd ate ath atr ats att baa bab bac bad bae bah bak bar bas bat bba bbb bbc bbd bbe bbh bbk bbr bbs bbt bca bcb bcc bcd bce bch bck bcr bcs bct bda bdb bdc bdd bde bdh bdk bdr bds bdt be- bea beb bec bed bee beh bek ber bes bet bha bhb bhc bhd bhe bhh bhk bhr bhs bht bka bkb bkc bke bkk bkr bks bkt bra brb brd bre brh brk brr brs brt bsa bsb bsc bsd bse bsh bsk bsr bss bst bta btb btc btd bte bth btk btr bts btt c-- caa cab cac cad cae cah cak car cas cat cba cbb cbc cbd cbe cbh cbk cbr cbs cbt cca ccb ccc ccd cce cch cck ccr ccs cct cda cdb cdc cdd cde cdh cdk cdr cds cdt ce- cea ceb cec ced cee ceh cek cer ces cet ch- cha chb chc chd che chh chk chr chs cht cka ckb ckc ckd ckh cks ckt cra crb crc crd cre crh crk crr crs crt csa csb csc csd cse csh csk csr css cst cta ctb ctc ctd cte cth ctk ctr cts ctt daa dab dac dad dae dah dak dar das dat dba dbb dbc dbd dbe dbh dbk dbr dbs dbt dca dcb dcc dcd dce dck dcr dcs dct dda ddb ddc ddd dde ddh ddk ddr dds ddt de- dea deb dec ded dee deh dek der des det dh- dha dhb dhc dhd dhe dhh dhk dhr dhs dht dka dkb dkc dke dkk dkr dks dkt dra drb drc drd dre drk drr drs drt dsa dsb dsc dsd dse dsh dsk dsr dss dst dta dtb dtc dtd dte dth dtk dtr dts dtt eaa eab eac ead eae eah eak ear eas eat eba ebb ebc ebd ebe ebh ebk ebr ebs ebt ec- eca ecb ecc ecd ece ech eck ecr ecs ect ed- eda edb edc edd ede edh edk edr eds edt eea eeb eec eed eee eek eer ees eet eha ehb ehc ehd ehe ehh ehr ehs eht eka ekb ekc ekd eke ekh ekr eks ekt era erb erc erd ere erh erk err ers ert es- esa esb esc esd ese esh esk esr ess est eta etb etc etd ete eth etk etr ets ett haa hab hac had hae hah hak har has hat hba hbb hbc hbd hbe hbh hbk hbr hbs hbt hca hcb hcc hcd hce hch hck hcr hcs hct hda hdb hdc hdd hde hdh hdk hdr hds hdt he- hea heb hec hed hee heh hek her hes het hha hhb hhc hhd hhe hhh hhk hhr hhs hht hka hkb hkd hkh hkk hkr hks hkt hr- hra hrb hrc hrd hre hrh hrk hrr hrs hrt hsa hsb hsc hsd hse hsh hsk hsr hss hst hta htb htc htd hte hth htk htr hts htt k-t ka- kaa kab kac kad kae kah kak kar kas kat kba kbb kbc kbd kbe kbh kbk kbr kbs kca kcb kcc kcd kce kch kck kcr kcs kct kda kdb kdc kde kdh kdk kdr kds kdt ke- kea keb kec ked kee keh kek ker kes ket kha khe khh khk khr khs kkb kkc kke kkh kkk kkr kks kkt kra krc krd krk krr krs krt ksa ksb ksc ksd kse ksh ksk ksr kss kst kta ktb ktc kte kth ktk ktr kts ktt ra- raa rab rac rad rae rah rak rar ras rat rba rbb rbc rbd rbe rbh rbk rbr rbs rbt rca rcb rcc rcd rce rch rcr rcs rct rda rdb rdc rdd rde rdh rdr rds rdt re- rea reb rec red ree reh rek rer res ret rh- rha rhb rhc rhd rhe rhh rhr rhs rht rkb rkc rke rkk rks rkt rra rrb rrc rrd rrh rrk rrr rrs rrt rsa rsb rsc rsd rse rsh rsk rsr rss rst rta rtb rtc rtd rte rtk rtr rts rtt saa sab sac sad sae sah sak sar sas sat sba sbb sbc sbd sbe sbh sbk sbr sbs sbt sca scb scc scd sce sch sck scr scs sct sda sdb sdc sdd sde sdh sdk sdr sds sdt se- sea seb sec sed see seh sek ser ses set sh- sha shb shc shd she shh shk shr shs sht sk- ska skb skc skd ske skh skk skr sks skt sr- sra srb src srd sre srh srk srr srs srt ss- ssa ssb ssc ssd sse ssh ssk ssr sss sst sta stb stc std ste sth stk str sts stt taa tab tac tad tae tah tak tar tas tat tba tbb tbc tbd tbe tbh tbk tbr tbs tbt tca tcb tcc tcd tce tch tck tcr tcs tct tda tdb tdc tdd tde tdh tdk tdr tds tdt te- tea teb tec ted tee teh tek ter tes tet th- tha thb thc thd the thh thk thr ths tht tka tkb tkc tke tkk tkr tks tkt tra trb trc trd tre trh trk trr trs trt tsa tsb tsc tsd tse tsh tsk tsr tss tst tta ttb ttc ttd tte tth ttk ttr tts ttt

-ase a-ak a-be a-ha