-er bbb bbe bbg bbn bbo bbr bbt be- beb bee beg ben beo ber bet bgb bge bgg bgn bgo bgr bgt bnb bne bng bnn bno bnr bnt bob boe bog bon boo bor bot brb bre brg brn bro brr brt btb bte btg btn bto btr btt ebb ebe ebg ebn ebo ebr ebt eeb eee eeg een eeo eer eet egb ege egg egn ego egr egt en- enb ene eng enn eno enr ent eo- eob eoe eog eon eoo eor eot erb ere erg ern ero err ert etb ete etg etn eto etr ett gbe gbg gbn gbo gbr gbt ge- geb gee geg gen geo ger get ggb ggg ggn ggo ggr ggt gnb gne gnn gno gnr gnt gob goe gog gon goo gor got grb gre grg grn gro grr grt gtb gte gtg gtn gto gtr gtt nbb nbe nbg nbn nbo nbr nbt ne- neb nee neg nen neo ner net ngb nge ngg ngn ngo ngt nnb nne nng nnn nno nnt no- nob noe nog non noo nor not nrb nre nrg nrn nro nrr nrt ntb nte ntg ntn nto ntr ntt ob- obb obe obg obn obo obr obt oeb oee oeg oen oeo oer oet oge ogg ogn ogo ogt on- onb one ong onn ono onr ont oo- oob oog oon ooo oor oot or- orb ore org orn oro orr ort ot- otb ote otg otn oto otr ott rbb rbe rbg rbn rbo rbr rbt re- reb ree reg ren reo rer ret rgb rge rgg rgn rgo rgr rgt rnb rng rnn rno rnr rnt rob roe rog ron roo ror rot rrb rrg rrn rrr rrt rtb rte rtg rtn rto rtr rtt tbb tbe tbg tbn tbo tbr tbt te- teb tee teg ten teo ter tet tgb tge tgg tgn tgo tgr tgt tnb tne tng tnn tno tnr tnt to- tob toe tog ton too tor tot trb tre trg trn tro trr trt ttb tte ttg ttn tto ttr ttt