-er b-u bbb bbe bbg bbl bbr bbs bbu be- beb bee beg bel ber bes beu bgb bge bgg bgl bgr bgs bgu bjg bjj bjr bjs bju blb ble blg blj bll blr bls blu brb bre brg brj brl brr brs bru bsb bse bsg bsj bsl bsr bss bsu bub bue bug buj bul bur bus buu ebb ebe ebg ebj ebl ebr ebs ebu eeb eee eeg eel eer ees egb ege egg egl egr egs egu ejl eju elb ele elg ell elr els elu erb ere erg erl err ers eru es- esb ese esg esl esr ess esu eu- eub eue eug euj eul eur eus gbe gbg gbj gbl gbr gbs gbu ge- geb gee geg gel ger ges geu ggb ggg ggj ggr ggs ggu gje gjg gjr glb gle glg glj gll glr gls glu grb gre grg grj grl grr grs gru gsb gse gsg gsj gsl gsr gss gsu gu- gub gue gug guj gul gur gus guu jbg jbj jbl jbr jbs jbu jeb jee jeg jej jel jer jes jeu jgb jge jgr jgs jgu jjb jjg jjj jjl jjr jjs jju jlb jle jlg jll jlr jls jlu jrb jrg jrl jrr jrs jsb jse jsg jsj jsl jsr jss jsu jub jue jug jul jur jus lbb lbe lbg lbj lbl lbr lbs lbu leb lee leg lej lel ler les leu lgb lge lgg lgj lgl lgr lgs lgu lje ljj ljs lju llb lle llg llj lll llr lls llu lrb lrg lrr lrs lru lsb lse lsg lsj lsl lsr lss lsu lub lue lug lul lur lus luu rbb rbe rbg rbl rbr rbs rbu re- reb ree reg rel rer res reu rgb rge rgg rgr rgs rjg rjr rle rlg rll rlr rls rlu rrb rrg rrl rrr rrs rru rsb rse rsg rsj rsl rsr rss rsu rub rue rug rur rus ruu sbb sbe sbg sbj sbl sbr sbs sbu se- seb see seg sej sel ser ses seu sgb sge sgg sgl sgr sgs sgu sjb sje sjj sjr sjs sju slb sle slg slj sll slr sls slu sr- srb sre srg srj srl srr srs ss- ssb sse ssg ssj ssl ssr sss ssu sub sue sug sul sur sus suu ubb ube ubg ubl ubr ubs ubu ueb uee ueg uel uer ues ugb uge ugg ugl ugr ugs ugu ujs ulb ule ulg ull ulr uls ulu ur- urb ure urg url urr urs uru usb use usg usj usl usr uss usu uue uug uur uus uuu