-er a-a a-b a-c a-t aaa aab aac aad aae aaj aao aar aas aat ab- aba abb abc abd abe abj abo abr abs abt ac- aca acb acc acd ace acj aco acr acs act ad- ada adb adc add ade adj ado adr ads adt aea aeb aec aed aee aej aeo aer aes aet aja ajb ajc ajd aje ajj ajo ajr ajs ajt aoa aob aoc aod aoe aoj aoo aor aos aot ar- ara arb arc ard are arj aro arr ars art as- asa asb asc asd ase asj aso asr ass ast at- ata atb atc atd ate ato atr ats att baa bab bac bad bae baj bao bar bas bat bba bbb bbc bbd bbe bbo bbr bbs bbt bca bcb bcc bcd bce bcj bco bcr bcs bct bda bdb bdc bdd bde bdj bdo bdr bds bdt be- bea beb bec bed bee beo ber bes bet bja bjc bjd bjj bjr bjs bjt boa bob boc bod boe boj boo bor bos bot bra brb brd bre brj bro brr brs brt bsa bsb bsc bsd bse bsj bso bsr bss bst bta btb btc btd bte bto btr bts btt c-- c-j caa cab cac cad cae caj cao car cas cat cba cbb cbc cbd cbe cbj cbo cbr cbs cbt cca ccb ccc ccd cce ccj cco ccr ccs cct cda cdb cdc cdd cde cdj cdo cdr cds cdt ce- cea ceb cec ced cee cej ceo cer ces cet cja cjb cjc cjd cjr cjs co- coa cob coc cod coe coj coo cor cos cot cra crb crc crd cre crj cro crr crs crt csa csb csc csd cse csj cso csr css cst cta ctb ctc ctd cte cto ctr cts ctt daa dab dac dad dae daj dao dar das dat dba dbb dbc dbd dbe dbo dbr dbs dbt dca dcb dcc dcd dce dco dcr dcs dct dda ddb ddc ddd dde ddo ddr dds ddt de- dea deb dec ded dee dej deo der des det dj- dja djb djc djd dje djo djs djt doa dob doc dod doe doj doo dor dos dot dra drb drc drd dre drj dro drr drs drt dsa dsb dsc dsd dse dsj dso dsr dss dst dta dtb dtc dtd dte dtj dto dtr dts dtt eaa eab eac ead eae eaj eao ear eas eat eba ebb ebc ebd ebe ebj ebo ebr ebs ebt ec- eca ecb ecc ecd ece ecj eco ecr ecs ect ed- eda edb edc edd ede edj edo edr eds edt eea eeb eec eed eee eeo eer ees eet eja ejc ejd ejo ejt eo- eoa eob eoc eod eoe eoo eor eos eot era erb erc erd ere ero err ers ert es- esa esb esc esd ese eso esr ess est eta etb etc etd ete etj eto etr ets ett j-d jaa jab jac jad jae jaj jao jar jas jat jba jbc jbj jbo jbr jbs jbt jca jcb jcc jcd jce jco jcr jcs jct jda jdb jdc jde jdo jdr jds jdt jea jeb jec jed jee jej jeo jer jes jet jja jjb jjc jjj jjr jjs joa job joc jod joe joj joo jor jos jot jra jrb jrc jro jrr jrs jrt jsa jsb jsc jsd jse jsj jso jsr jss jst jta jtb jtc jte jtr jts jtt oaa oab oac oad oae oaj oao oar oas oat ob- oba obb obc obd obe obj obo obr obs obt oc- oca ocb occ ocd ocj oco ocr ocs oct oda odb odc odd ode odo odr ods odt oea oeb oec oed oee oeo oer oes oet oja ojb ojc ojd oje ojo ojs oo- ooa oob ooc ood ooo oor oos oot or- ora orb orc ord ore oro orr ors ort os- osa osb osc osd ose osj oso osr oss ost ot- ota otb otc otd ote oto otr ots ott ra- raa rab rac rad rae raj rao rar ras rat rba rbb rbc rbd rbe rbo rbr rbs rbt rca rcb rcc rcd rce rcj rco rcr rcs rct rda rdb rdc rdd rde rdj rdo rdr rds rdt re- rea reb rec red ree reo rer res ret rja rjc rjr roa rob roc rod roe roj roo ror ros rot rra rrb rrc rrd rrr rrs rrt rsa rsb rsc rsd rse rsj rso rsr rss rst rta rtb rtc rtd rte rtj rto rtr rts rtt saa sab sac sad sae saj sao sar sas sat sba sbb sbc sbd sbe sbj sbo sbr sbs sbt sca scb scc scd sce scj sco scr scs sct sda sdb sdc sdd sde sdj sdo sdr sds sdt se- sea seb sec sed see sej seo ser ses set sja sjb sjc sjd sje sjj sjr sjs sjt soa sob soc sod soe soj soo sor sos sot sr- sra srb src srd sre srj sro srr srs srt ss- ssa ssb ssc ssd sse ssj sso ssr sss sst sta stb stc std ste stj sto str sts stt taa tab tac tad tae taj tao tar tas tat tba tbb tbc tbd tbe tbj tbo tbr tbs tbt tca tcb tcc tcd tce tcj tco tcr tcs tct tda tdb tdc tdd tde tdo tdr tds tdt te- tea teb tec ted tee tej teo ter tes tet tjc tjd tje tjo tjr tjs to- toa tob toc tod toe toj too tor tos tot tra trb trc trd tre tro trr trs trt tsa tsb tsc tsd tse tsj tso tsr tss tst tta ttb ttc ttd tte tto ttr tts ttt