-er bbb bbe bbk bbl bbr bbs be- beb bee bek bel ber bes bjj bjk bjr bjs bkb bke bkk bkl bkr bks blb ble blj blk bll blr bls brb bre brj brk brl brr brs bsb bse bsj bsk bsl bsr bss ebb ebe ebj ebk ebl ebr ebs eeb eee eek eel eer ees ejl ekb eke ekl ekr eks elb ele elk ell elr els erb ere erk erl err ers es- esb ese esk esl esr ess jbj jbk jbl jbr jbs jeb jee jej jek jel jer jes jjb jjj jjk jjl jjr jjs jkb jkk jkl jkr jks jlb jle jll jlr jls jrb jrk jrl jrr jrs jsb jse jsj jsk jsl jsr jss kbb kbe kbk kbl kbr kbs ke- keb kee kek kel ker kes kjb kje kjr kjs kkb kke kkk kkl kkr kks kl- klb klr kls krk krl krr krs ksb kse ksk ksl ksr kss lbb lbe lbj lbk lbl lbr lbs leb lee lej lek lel ler les lje ljj ljs lkb lkl lkr lks llb lle llj llk lll llr lls lrb lrk lrr lrs lsb lse lsj lsk lsl lsr lss rbb rbe rbk rbl rbr rbs re- reb ree rek rel rer res rjk rjr rkb rke rkk rks rle rll rlr rls rrb rrk rrl rrr rrs rsb rse rsj rsk rsl rsr rss sbb sbe sbj sbk sbl sbr sbs se- seb see sej sek sel ser ses sjb sje sjj sjk sjr sjs sk- skb ske skj skk skl skr sks slb sle slj slk sll slr sls sr- srb sre srj srk srl srr srs ss- ssb sse ssj ssk ssl ssr sss