-er a-a a-b a-t aaa aab aad aae aaj aao aar aas aat ab- aba abb abd abe abj abo abr abs abt ad- ada adb add ade adj ado adr ads adt aea aeb aed aee aej aeo aer aes aet aja ajb ajd aje ajj ajo ajr ajs ajt aoa aob aod aoe aoj aoo aor aos aot ar- ara arb ard are arj aro arr ars art as- asa asb asd ase asj aso asr ass ast at- ata atb atd ate ato atr ats att baa bab bad bae baj bao bar bas bat bba bbb bbd bbe bbo bbr bbs bbt bda bdb bdd bde bdj bdo bdr bds bdt be- bea beb bed bee beo ber bes bet bja bjd bjj bjr bjs bjt boa bob bod boe boj boo bor bos bot bra brb brd bre brj bro brr brs brt bsa bsb bsd bse bsj bso bsr bss bst bta btb btd bte bto btr bts btt daa dab dad dae daj dao dar das dat dba dbb dbd dbe dbo dbr dbs dbt dda ddb ddd dde ddo ddr dds ddt de- dea deb ded dee dej deo der des det dj- dja djb djd dje djo djs djt doa dob dod doe doj doo dor dos dot dra drb drd dre drj dro drr drs drt dsa dsb dsd dse dsj dso dsr dss dst dta dtb dtd dte dtj dto dtr dts dtt eaa eab ead eae eaj eao ear eas eat eba ebb ebd ebe ebj ebo ebr ebs ebt ed- eda edb edd ede edj edo edr eds edt eea eeb eed eee eeo eer ees eet eja ejd ejo ejt eo- eoa eob eod eoe eoo eor eos eot era erb erd ere ero err ers ert es- esa esb esd ese eso esr ess est eta etb etd ete etj eto etr ets ett j-d jaa jab jad jae jaj jao jar jas jat jba jbj jbo jbr jbs jbt jda jdb jde jdo jdr jds jdt jea jeb jed jee jej jeo jer jes jet jja jjb jjj jjr jjs joa job jod joe joj joo jor jos jot jra jrb jro jrr jrs jrt jsa jsb jsd jse jsj jso jsr jss jst jta jtb jte jtr jts jtt oaa oab oad oae oaj oao oar oas oat ob- oba obb obd obe obj obo obr obs obt oda odb odd ode odo odr ods odt oea oeb oed oee oeo oer oes oet oja ojb ojd oje ojo ojs oo- ooa oob ood ooo oor oos oot or- ora orb ord ore oro orr ors ort os- osa osb osd ose osj oso osr oss ost ot- ota otb otd ote oto otr ots ott ra- raa rab rad rae raj rao rar ras rat rba rbb rbd rbe rbo rbr rbs rbt rda rdb rdd rde rdj rdo rdr rds rdt re- rea reb red ree reo rer res ret rja rjr roa rob rod roe roj roo ror ros rot rra rrb rrd rrr rrs rrt rsa rsb rsd rse rsj rso rsr rss rst rta rtb rtd rte rtj rto rtr rts rtt saa sab sad sae saj sao sar sas sat sba sbb sbd sbe sbj sbo sbr sbs sbt sda sdb sdd sde sdj sdo sdr sds sdt se- sea seb sed see sej seo ser ses set sja sjb sjd sje sjj sjr sjs sjt soa sob sod soe soj soo sor sos sot sr- sra srb srd sre srj sro srr srs srt ss- ssa ssb ssd sse ssj sso ssr sss sst sta stb std ste stj sto str sts stt taa tab tad tae taj tao tar tas tat tba tbb tbd tbe tbj tbo tbr tbs tbt tda tdb tdd tde tdo tdr tds tdt te- tea teb ted tee tej teo ter tes tet tjd tje tjo tjr tjs to- toa tob tod toe toj too tor tos tot tra trb trd tre tro trr trs trt tsa tsb tsd tse tsj tso tsr tss tst tta ttb ttd tte tto ttr tts ttt