-er bbb bbd bbe bbg bbl bbr bbt bdb bdd bde bdg bdl bdr bdt be- beb bed bee beg bel ber bet bgb bgd bge bgg bgl bgr bgt blb bld ble blg bll blr blt brb brd bre brg brl brr brt btb btd bte btg btl btr btt dbb dbd dbe dbg dbl dbr dbt ddb ddd dde ddg ddl ddr ddt de- deb ded dee deg del der det dgd dge dgg dgl dgr dgt dl- dlb dld dle dlg dll dlr dlt drb drd dre drg drl drr drt dtb dtd dte dtg dtl dtr dtt ebb ebd ebe ebg ebl ebr ebt ed- edb edd ede edg edl edr edt eeb eed eee eeg eel eer eet egb egd ege egg egl egr egt elb eld ele elg ell elr elt erb erd ere erg erl err ert etb etd ete etg etl etr ett g-d gbd gbe gbg gbl gbr gbt gdb gdd gde gdl gdr gdt ge- geb ged gee geg gel ger get ggb ggd ggg ggr ggt glb gld gle glg gll glr glt grb grd gre grg grl grr grt gtb gtd gte gtg gtl gtr gtt lbb lbd lbe lbg lbl lbr lbt ldb ldd lde ldg ldl ldr ldt leb led lee leg lel ler let lgb lgd lge lgg lgl lgr lgt llb lld lle llg lll llr llt lrb lrd lrg lrr lrt ltb ltd lte ltg ltl ltr ltt rbb rbd rbe rbg rbl rbr rbt rdb rdd rde rdg rdl rdr rdt re- reb red ree reg rel rer ret rgb rgd rge rgg rgr rgt rld rle rlg rll rlr rlt rrb rrd rrg rrl rrr rrt rtb rtd rte rtg rtl rtr rtt tbb tbd tbe tbg tbl tbr tbt tdb tdd tde tdg tdl tdr tdt te- teb ted tee teg tel ter tet tgb tge tgg tgl tgr tgt tld tle tlg tll tlr tlt trb trd tre trg trl trr trt ttb ttd tte ttg ttl ttr ttt