-er eee eeg eer eet eex ege egg egr egt egu egx ere erg err ert eru ete etg etr ett etu etx eu- eue eug eur eut eux ex- exe exr ext exu exx ge- gee geg ger get geu gex ggg ggr ggt ggu gre grg grr grt gru grx gte gtg gtr gtt gtu gtx gu- gue gug gur gut guu gxt re- ree reg rer ret reu rex rge rgg rgr rgt rgx rrg rrr rrt rru rte rtg rtr rtt rtu rtx rue rug rur rut ruu rux rxr t-x te- tee teg ter tet teu tex tge tgg tgr tgt tgu tre trg trr trt tru trx tte ttg ttr ttt ttu ttx tue tug tur tut tuu tux txe txt txu uee ueg uer uet uge ugg ugr ugt ugu ugx ur- ure urg urr urt uru urx ute utr utt utu utx uue uug uur uut uuu uxr uxt uxu xee xeg xer xet xeu xex xge xrt xrx xtr xtx xue xxx