-er a-a a-b a-c a-t aaa aab aac aad aae aak aar aas aat ab- aba abb abc abd abe abk abr abs abt ac- aca acb acc acd ace ack acr acs act ad- ada adb adc add ade adk adr ads adt aea aeb aec aed aee aek aer aes aet aka akb akc akd ake akk akr aks ar- ara arb arc ard are ark arr ars art as- asa asb asc asd ase ask asr ass ast at- ata atb atc atd ate atr ats att baa bab bac bad bae bak bar bas bat bba bbb bbc bbd bbe bbk bbr bbs bbt bca bcb bcc bcd bce bck bcr bcs bct bda bdb bdc bdd bde bdk bdr bds bdt be- bea beb bec bed bee bek ber bes bet bka bkb bkc bke bkk bkr bks bkt bra brb brd bre brk brr brs brt bsa bsb bsc bsd bse bsk bsr bss bst bta btb btc btd bte btk btr bts btt c-- caa cab cac cad cae cak car cas cat cba cbb cbc cbd cbe cbk cbr cbs cbt cca ccb ccc ccd cce cck ccr ccs cct cda cdb cdc cdd cde cdk cdr cds cdt ce- cea ceb cec ced cee cek cer ces cet cka ckb ckc ckd cks ckt cra crb crc crd cre crk crr crs crt csa csb csc csd cse csk csr css cst cta ctb ctc ctd cte ctk ctr cts ctt daa dab dac dad dae dak dar das dat dba dbb dbc dbd dbe dbk dbr dbs dbt dca dcb dcc dcd dce dck dcr dcs dct dda ddb ddc ddd dde ddk ddr dds ddt de- dea deb dec ded dee dek der des det dka dkb dkc dke dkk dkr dks dkt dra drb drc drd dre drk drr drs drt dsa dsb dsc dsd dse dsk dsr dss dst dta dtb dtc dtd dte dtk dtr dts dtt eaa eab eac ead eae eak ear eas eat eba ebb ebc ebd ebe ebk ebr ebs ebt ec- eca ecb ecc ecd ece eck ecr ecs ect ed- eda edb edc edd ede edk edr eds edt eea eeb eec eed eee eek eer ees eet eka ekb ekc ekd eke ekr eks ekt era erb erc erd ere erk err ers ert es- esa esb esc esd ese esk esr ess est eta etb etc etd ete etk etr ets ett k-t ka- kaa kab kac kad kae kak kar kas kat kba kbb kbc kbd kbe kbk kbr kbs kca kcb kcc kcd kce kck kcr kcs kct kda kdb kdc kde kdk kdr kds kdt ke- kea keb kec ked kee kek ker kes ket kkb kkc kke kkk kkr kks kkt kra krc krd krk krr krs krt ksa ksb ksc ksd kse ksk ksr kss kst kta ktb ktc kte ktk ktr kts ktt ra- raa rab rac rad rae rak rar ras rat rba rbb rbc rbd rbe rbk rbr rbs rbt rca rcb rcc rcd rce rcr rcs rct rda rdb rdc rdd rde rdr rds rdt re- rea reb rec red ree rek rer res ret rkb rkc rke rkk rks rkt rra rrb rrc rrd rrk rrr rrs rrt rsa rsb rsc rsd rse rsk rsr rss rst rta rtb rtc rtd rte rtk rtr rts rtt saa sab sac sad sae sak sar sas sat sba sbb sbc sbd sbe sbk sbr sbs sbt sca scb scc scd sce sck scr scs sct sda sdb sdc sdd sde sdk sdr sds sdt se- sea seb sec sed see sek ser ses set sk- ska skb skc skd ske skk skr sks skt sr- sra srb src srd sre srk srr srs srt ss- ssa ssb ssc ssd sse ssk ssr sss sst sta stb stc std ste stk str sts stt taa tab tac tad tae tak tar tas tat tba tbb tbc tbd tbe tbk tbr tbs tbt tca tcb tcc tcd tce tck tcr tcs tct tda tdb tdc tdd tde tdk tdr tds tdt te- tea teb tec ted tee tek ter tes tet tka tkb tkc tke tkk tkr tks tkt tra trb trc trd tre trk trr trs trt tsa tsb tsc tsd tse tsk tsr tss tst tta ttb ttc ttd tte ttk ttr tts ttt

-ase a-ak a-be aaaa aaab aaac aaad aaae aaar aaas aaba aabb aabc aabd aabt aaca aacb aacc aacd aace aack aacr aacs aact aada aadc aade aads aadt aaea aaec aaes aaka aake aara aarc aard aare aars aart aasa aasc aasd aase aass aast aata aatc aatk aatt abaa abab abac abad abae abak abar abas abat abb- abba abbb abbe abbr abbs abbt abca abcb abcc abcd abcr abcs abct abda abec abed abee aber abes abet abra abrc abrs abs- absa absd abse abss abta abts ac-t acaa acab acac acad acae acar acas acat acba acca accc accd acce accs acct acda acdb acdc acde acds acdt ace- acea acec aced acek acer aces acet ackd acke acks acr- acra acrc acre acrr acrs acsa acsc acsd acse acss acst acta actc acte acts actt adaa adab adac adad adae adak adar adas adat adba adbc adcc adcs adda addc addd adde addr adds adea adeb adee ader ades adet adra adre adrs adsa adsr adss adst adta adts aeac aeas aebs aecb aect aede aedt aeer aeka aer- aera aerc aerd aers aesc aesd aess aest aeta aetc aetr aett akaa akae akar akas akca aked akee aker akes akka akr- akra akre aksa akst akte arab arac arad arae arak arar aras arat arba arbe arbs arc- arca arce arcs arct arda ardc arde ards area arec ared aree arek ares aret arka arke arks arr- arra arrc arre arrk arrr arrs arrt ars- arsa arsc arsd arse arsk arst arta artc arte artr arts asaa asab asac asad