-er a-a a-b a-t aaa aab aae aaj aar aas aat ab- aba abb abe abj abr abs abt aea aeb aee aej aer aes aet aja ajb aje ajj ajr ajs ajt ar- ara arb are arj arr ars art as- asa asb ase asj asr ass ast at- ata atb ate atr ats att baa bab bae baj bar bas bat bba bbb bbe bbr bbs bbt be- bea beb bee ber bes bet bja bjj bjr bjs bjt bra brb bre brj brr brs brt bsa bsb bse bsj bsr bss bst bta btb bte btr bts btt eaa eab eae eaj ear eas eat eba ebb ebe ebj ebr ebs ebt eea eeb eee eer ees eet eja ejt era erb ere err ers ert es- esa esb ese esr ess est eta etb ete etj etr ets ett jaa jab jae jaj jar jas jat jba jbj jbr jbs jbt jea jeb jee jej jer jes jet jja jjb jjj jjr jjs jra jrb jrr jrs jrt jsa jsb jse jsj jsr jss jst jta jtb jte jtr jts jtt ra- raa rab rae raj rar ras rat rba rbb rbe rbr rbs rbt re- rea reb ree rer res ret rja rjr rra rrb rrr rrs rrt rsa rsb rse rsj rsr rss rst rta rtb rte rtj rtr rts rtt saa sab sae saj sar sas sat sba sbb sbe sbj sbr sbs sbt se- sea seb see sej ser ses set sja sjb sje sjj sjr sjs sjt sr- sra srb sre srj srr srs srt ss- ssa ssb sse ssj ssr sss sst sta stb ste stj str sts stt taa tab tae taj tar tas tat tba tbb tbe tbj tbr tbs tbt te- tea teb tee tej ter tes tet tje tjr tjs tra trb tre trr trs trt tsa tsb tse tsj tsr tss tst tta ttb tte ttr tts ttt