-er -ol bbb bbe bbg bbl bbo bbr bbs bbt be- beb bee beg bel beo ber bes bet bgb bge bgg bgl bgo bgr bgs bgt bjg bjj bjr bjs bjt blb ble blg blj bll blo blr bls blt bob boe bog boj bol boo bor bos bot brb bre brg brj brl bro brr brs brt bsb bse bsg bsj bsl bso bsr bss bst btb bte btg btl bto btr bts btt ebb ebe ebg ebj ebl ebo ebr ebs ebt eeb eee eeg eel eeo eer ees eet egb ege egg egl ego egr egs egt ejl ejo ejt elb ele elg ell elo elr els elt eo- eob eoe eog eol eoo eor eos eot erb ere erg erl ero err ers ert es- esb ese esg esl eso esr ess est etb ete etg etj etl eto etr ets ett gbe gbg gbj gbl gbo gbr gbs gbt ge- geb gee geg gel geo ger ges get ggb ggg ggj ggo ggr ggs ggt gje gjg gjr gjt glb gle glg glj gll glo glr gls glt gob goe gog gol goo gor gos got grb gre grg grj grl gro grr grs grt gsb gse gsg gsj gsl gso gsr gss gst gtb gte gtg gtl gto gtr gts gtt jbg jbj jbl jbo jbr jbs jbt jeb jee jeg jej jel jeo jer jes jet jgb jge jgo jgr jgs jgt jjb jjg jjj jjl jjr jjs jlb jle jlg jll jlo jlr jls jlt job joe jog joj jol joo jor jos jot jrb jrg jrl jro jrr jrs jrt jsb jse jsg jsj jsl jso jsr jss jst jtb jte jtg jtl jtr jts jtt lbb lbe lbg lbj lbl lbo lbr lbs lbt leb lee leg lej lel leo ler les let lgb lge lgg lgj lgl lgo lgr lgs lgt lje ljj ljs llb lle llg llj lll llo llr lls llt lob loe log loj lol loo lor los lot lrb lrg lro lrr lrs lrt lsb lse lsg lsj lsl lso lsr lss lst ltb lte ltg ltl lto ltr lts ltt ob- obb obe obg obj obl obo obr obs obt oeb oee oeg oel oeo oer oes oet oge ogg ogl ogo ogs ogt ojb oje ojo ojs olb ole olg oll olo ols olt oo- oob oog ool ooo oor oos oot or- orb ore org orl oro orr ors ort os- osb ose osg osj osl oso osr oss ost ot- otb ote otg otl oto otr ots ott rbb rbe rbg rbl rbo rbr rbs rbt re- reb ree reg rel reo rer res ret rgb rge rgg rgo rgr rgs rgt rjg rjr rle rlg rll rlo rlr rls rlt rob roe rog roj rol roo ror ros rot rrb rrg rrl rrr rrs rrt rsb rse rsg rsj rsl rso rsr rss rst rtb rte rtg rtj rtl rto rtr rts rtt sbb sbe sbg sbj sbl sbo sbr sbs sbt se- seb see seg sej sel seo ser ses set sgb sge sgg sgl sgo sgr sgs sgt sjb sje sjj sjr sjs sjt slb sle slg slj sll slo slr sls slt sob soe sog soj sol soo sor sos sot sr- srb sre srg srj srl sro srr srs srt ss- ssb sse ssg ssj ssl sso ssr sss sst stb ste stg stj stl sto str sts stt tbb tbe tbg tbj tbl tbo tbr tbs tbt te- teb tee teg tej tel teo ter tes tet tgb tge tgg tgl tgo tgr tgs tgt tje tjo tjr tjs tle tlg tlj tll tlo tlr tls tlt to- tob toe tog toj tol too tor tos tot trb tre trg trl tro trr trs trt tsb tse tsg tsj tsl tso tsr tss tst ttb tte ttg ttl tto ttr tts ttt