-er ddd dde ddg ddl ddr ddt de- ded dee deg del der det dgd dge dgg dgl dgr dgt dl- dld dle dlg dll dlr dlt drd dre drg drl drr drt dtd dte dtg dtl dtr dtt ed- edd ede edg edl edr edt eed eee eeg eel eer eet egd ege egg egl egr egt eld ele elg ell elr elt erd ere erg erl err ert etd ete etg etl etr ett g-d gdd gde gdl gdr gdt ge- ged gee geg gel ger get ggd ggg ggr ggt gld gle glg gll glr glt grd gre grg grl grr grt gtd gte gtg gtl gtr gtt ldd lde ldg ldl ldr ldt led lee leg lel ler let lgd lge lgg lgl lgr lgt lld lle llg lll llr llt lrd lrg lrr lrt ltd lte ltg ltl ltr ltt rdd rde rdg rdl rdr rdt re- red ree reg rel rer ret rgd rge rgg rgr rgt rld rle rlg rll rlr rlt rrd rrg rrl rrr rrt rtd rte rtg rtl rtr rtt tdd tde tdg tdl tdr tdt te- ted tee teg tel ter tet tge tgg tgl tgr tgt tld tle tlg tll tlr tlt trd tre trg trl trr trt ttd tte ttg ttl ttr ttt