-er bbb bbe bbg bbo bbr bbt be- beb bee beg beo ber bet bgb bge bgg bgo bgr bgt bjg bjj bjr bjt bob boe bog boj boo bor bot brb bre brg brj bro brr brt btb bte btg bto btr btt ebb ebe ebg ebj ebo ebr ebt eeb eee eeg eeo eer eet egb ege egg ego egr egt ejo ejt eo- eob eoe eog eoo eor eot erb ere erg ero err ert etb ete etg etj eto etr ett gbe gbg gbj gbo gbr gbt ge- geb gee geg geo ger get ggb ggg ggj ggo ggr ggt gje gjg gjr gjt gob goe gog goo gor got grb gre grg grj gro grr grt gtb gte gtg gto gtr gtt jbg jbj jbo jbr jbt jeb jee jeg jej jeo jer jet jgb jge jgo jgr jgt jjb jjg jjj jjr job joe jog joj joo jor jot jrb jrg jro jrr jrt jtb jte jtg jtr jtt ob- obb obe obg obj obo obr obt oeb oee oeg oeo oer oet oge ogg ogo ogt ojb oje ojo oo- oob oog ooo oor oot or- orb ore org oro orr ort ot- otb ote otg oto otr ott rbb rbe rbg rbo rbr rbt re- reb ree reg reo rer ret rgb rge rgg rgo rgr rgt rjg rjr rob roe rog roj roo ror rot rrb rrg rrr rrt rtb rte rtg rtj rto rtr rtt tbb tbe tbg tbj tbo tbr tbt te- teb tee teg tej teo ter tet tgb tge tgg tgo tgr tgt tje tjo tjr to- tob toe tog toj too tor tot trb tre trg tro trr trt ttb tte ttg tto ttr ttt