-er b-p bbb bbe bbg bbl bbn bbp bbr bbt be- beb bee beg bel ben bep ber bet bgb bge bgg bgl bgn bgp bgr bgt blb ble blg bll bln blp blr blt bnb bne bng bnl bnn bnp bnr bnt bpb bpe bpg bpl bpn bpp bpr bpt brb bre brg brl brn brp brr brt btb bte btg btl btn btp btr btt ebb ebe ebg ebl ebn ebp ebr ebt eeb eee eeg eel een eep eer eet egb ege egg egl egn egp egr egt elb ele elg ell eln elp elr elt en- enb ene eng enl enn enp enr ent ep- epb epe epg epl epn epp epr ept erb ere erg erl ern erp err ert etb ete etg etl etn etp etr ett g-p gbe gbg gbl gbn gbp gbr gbt ge- geb gee geg gel gen gep ger get ggb ggg ggn ggp ggr ggt glb gle glg gll gln glp glr glt gnb gne gnl gnn gnp gnr gnt gpb gpe gpg gpl gpn gpp gpr gpt grb gre grg grl grn grp grr grt gtb gte gtg gtl gtn gtp gtr gtt l-p lbb lbe lbg lbl lbp lbr lbt leb lee leg lel len lep ler let lgb lge lgg lgl lgn lgp lgr lgt llb lle llg lll lln llp llr llt lnb lne lng lnl lnn lnp lnr lnt lpb lpe lpg lpl lpn lpp lpr lpt lrb lrg lrn lrp lrr lrt ltb lte ltg ltl ltp ltr ltt nbb nbe nbg nbl nbn nbp nbr nbt ne- neb nee neg nel nen nep ner net ngb nge ngg ngl ngn ngp ngt nlb nle nlg nll nln nlp nlr nlt nnb nne nng nnl nnn nnp nnt npb npe npg npl npn npp npr npt nrb nre nrg nrl nrn nrp nrr nrt ntb nte ntg ntn ntp ntr ntt p-p pbb pbe pbg pbl pbn pbp pbr pbt peb pee peg pel pen pep per pet pgb pge pgg pgl pgn pgp pgr pgt plb ple plg pll pln plp plr plt pn- pnb pne png pnl pnn pnp pnr pnt ppb ppe ppg ppl ppn ppp ppr ppt prb pre prg prl prn prp prr prt pt- ptb pte ptg ptl ptn ptp ptr ptt rbb rbe rbg rbl rbn rbp rbr rbt re- reb ree reg rel ren rep rer ret rgb rge rgg rgn rgp rgr rgt rle rlg rll rln rlp rlr rlt rnb rng rnn rnp rnr rnt rpb rpe rpg rpl rpn rpp rpr rpt rrb rrg rrl rrn rrp rrr rrt rtb rte rtg rtl rtn rtp rtr rtt tbb tbe tbg tbl tbn tbp tbr tbt te- teb tee teg tel ten tep ter tet tgb tge tgg tgl tgn tgp tgr tgt tle tlg tll tln tlp tlr tlt tnb tne tng tnl tnn tnp tnr tnt tpb tpe tpg tpl tpn tpp tpr tpt trb tre trg trl trn trp trr trt ttb tte ttg ttl ttn ttp ttr ttt