-er bbb bbe bbg bbm bbo bbr bbs bbt be- beb bee beg bem beo ber bes bet bgb bge bgg bgm bgo bgr bgs bgt bmb bme bmg bmm bmo bmr bms bmt bob boe bog bom boo bor bos bot brb bre brg brm bro brr brs brt bsb bse bsg bsm bso bsr bss bst btb bte btg btm bto btr bts btt ebb ebe ebg ebm ebo ebr ebs ebt eeb eee eeg eem eeo eer ees eet egb ege egg egm ego egr egs egt em- emb eme emg emm emo emr ems emt eo- eob eoe eog eom eoo eor eos eot erb ere erg erm ero err ers ert es- esb ese esg esm eso esr ess est etb ete etg etm eto etr ets ett gbe gbg gbm gbo gbr gbs gbt ge- geb gee geg gem geo ger ges get ggb ggg ggm ggo ggr ggs ggt gmb gme gmg gmm gmo gmr gms gmt gob goe gog gom goo gor gos got grb gre grg grm gro grr grs grt gsb gse gsg gsm gso gsr gss gst gtb gte gtg gtm gto gtr gts gtt m-o m-r mbb mbe mbg mbm mbo mbr mbs mbt meb mee meg mem meo mer mes met mgb mge mgm mgo mgr mgs mgt mmb mme mmg mmm mmo mmr mms mmt mob moe mog mom moo mor mos mot mrb mre mrg mrm mro mrr mrs mrt msb mse msg msm mso msr mss mst mtb mte mtg mtm mto mtr mts mtt ob- obb obe obg obm obo obr obs obt oeb oee oeg oem oeo oer oes oet oge ogg ogo ogs ogt om- omb ome omg omm omo omr oms omt oo- oob oog oom ooo oor oos oot or- orb ore org orm oro orr ors ort os- osb ose osg osm oso osr oss ost ot- otb ote otg otm oto otr ots ott rbb rbe rbg rbm rbo rbr rbs rbt re- reb ree reg rem reo rer res ret rgb rge rgg rgo rgr rgs rgt rmb rme rmg rmm rmo rmr rms rmt rob roe rog rom roo ror ros rot rrb rrg rrm rrr rrs rrt rsb rse rsg rsm rso rsr rss rst rtb rte rtg rtm rto rtr rts rtt sbb sbe sbg sbm sbo sbr sbs sbt se- seb see seg sem seo ser ses set sgb sge sgg sgm sgo sgr sgs sgt smb sme smg smm smo smr sms smt sob soe sog som soo sor sos sot sr- srb sre srg srm sro srr srs srt ss- ssb sse ssg ssm sso ssr sss sst stb ste stg stm sto str sts stt tbb tbe tbg tbm tbo tbr tbs tbt te- teb tee teg tem teo ter tes tet tgb tge tgg tgm tgo tgr tgs tgt tmb tme tmg tmm tmo tmr tms tmt to- tob toe tog tom too tor tos tot trb tre trg trm tro trr trs trt tsb tse tsg tsm tso tsr tss tst ttb tte ttg ttm tto ttr tts ttt