-er b-u bbb bbd bbe bbm bbr bbs bbt bbu bdb bdd bde bdm bdr bds bdt bdu be- beb bed bee bem ber bes bet beu bmb bmd bme bmm bmr bms bmt bmu brb brd bre brm brr brs brt bru bsb bsd bse bsm bsr bss bst bsu btb btd bte btm btr bts btt btu bub bud bue bum bur bus but buu dbb dbd dbe dbm dbr dbs dbt dbu ddb ddd dde ddm ddr dds ddt ddu de- deb ded dee dem der des det deu dmb dmd dme dmm dmr dms dmt dmu drb drd dre drm drr drs drt dru dsb dsd dse dsm dsr dss dst dsu dtb dtd dte dtm dtr dts dtt dtu dub dud due dum dur dus dut ebb ebd ebe ebm ebr ebs ebt ebu ed- edb edd ede edm edr eds edt edu eeb eed eee eem eer ees eet em- emb emd eme emm emr ems emt emu erb erd ere erm err ers ert eru es- esb esd ese esm esr ess est esu etb etd ete etm etr ets ett etu eu- eub eud eue eur eus eut m-r mbb mbd mbe mbm mbr mbs mbt mbu mdb mdd mde mdm mdr mds mdt mdu meb med mee mem mer mes met meu mmb mmd mme mmm mmr mms mmt mmu mrb mrd mre mrm mrr mrs mrt mru msb msd mse msm msr mss mst msu mtb mtd mte mtm mtr mts mtt mtu mub mud mue mum mur mus mut muu rbb rbd rbe rbm rbr rbs rbt rbu rdb rdd rde rdm rdr rds rdt rdu re- reb red ree rem rer res ret reu rmb rmd rme rmm rmr rms rmt rrb rrd rrm rrr rrs rrt rru rsb rsd rse rsm rsr rss rst rsu rtb rtd rte rtm rtr rts rtt rtu rub rud rue rum rur rus rut ruu sbb sbd sbe sbm sbr sbs sbt sbu sdb sdd sde sdm sdr sds sdt sdu se- seb sed see sem ser ses set seu smb smd sme smm smr sms smt smu sr- srb srd sre srm srr srs srt ss- ssb ssd sse ssm ssr sss sst ssu stb std ste stm str sts stt stu sub sud sue sum sur sus sut suu tbb tbd tbe tbm tbr tbs tbt tbu tdb tdd tde tdm tdr tds tdt tdu te- teb ted tee tem ter tes tet teu tmb tmd tme tmm tmr tms tmt tmu trb trd tre trm trr trs trt tru tsb tsd tse tsm tsr tss tst tsu ttb ttd tte ttm ttr tts ttt ttu tub tud tue tum tur tus tut tuu ubb ube ubr ubs ubt ubu udb udd ude udm udr uds udt udu ueb ued uee uem uer ues uet um- umb umd ume umm umr ums umt umu ur- urb urd ure urm urr urs urt uru usb usd use usm usr uss ust usu utb utd ute utm utr uts utt utu uue uum uur uus uut uuu