-er -ol bbb bbe bbg bbl bbn bbo bbr bbt be- beb bee beg bel ben beo ber bet bgb bge bgg bgl bgn bgo bgr bgt blb ble blg bll bln blo blr blt bnb bne bng bnl bnn bno bnr bnt bob boe bog bol bon boo bor bot brb bre brg brl brn bro brr brt btb bte btg btl btn bto btr btt ebb ebe ebg ebl ebn ebo ebr ebt eeb eee eeg eel een eeo eer eet egb ege egg egl egn ego egr egt elb ele elg ell eln elo elr elt en- enb ene eng enl enn eno enr ent eo- eob eoe eog eol eon eoo eor eot erb ere erg erl ern ero err ert etb ete etg etl etn eto etr ett gbe gbg gbl gbn gbo gbr gbt ge- geb gee geg gel gen geo ger get ggb ggg ggn ggo ggr ggt glb gle glg gll gln glo glr glt gnb gne gnl gnn gno gnr gnt gob goe gog gol gon goo gor got grb gre grg grl grn gro grr grt gtb gte gtg gtl gtn gto gtr gtt lbb lbe lbg lbl lbo lbr lbt leb lee leg lel len leo ler let lgb lge lgg lgl lgn lgo lgr lgt llb lle llg lll lln llo llr llt lnb lne lng lnl lnn lno lnr lnt lob loe log lol lon loo lor lot lrb lrg lrn lro lrr lrt ltb lte ltg ltl lto ltr ltt nbb nbe nbg nbl nbn nbo nbr nbt ne- neb nee neg nel nen neo ner net ngb nge ngg ngl ngn ngo ngt nlb nle nlg nll nln nlo nlr nlt nnb nne nng nnl nnn nno nnt no- nob noe nog nol non noo nor not nrb nre nrg nrl nrn nro nrr nrt ntb nte ntg ntn nto ntr ntt ob- obb obe obg obl obn obo obr obt oeb oee oeg oel oen oeo oer oet oge ogg ogl ogn ogo ogt olb ole olg oll oln olo olt on- onb one ong onl onn ono onr ont oo- oob oog ool oon ooo oor oot or- orb ore org orl orn oro orr ort ot- otb ote otg otl otn oto otr ott rbb rbe rbg rbl rbn rbo rbr rbt re- reb ree reg rel ren reo rer ret rgb rge rgg rgn rgo rgr rgt rle rlg rll rln rlo rlr rlt rnb rng rnn rno rnr rnt rob roe rog rol ron roo ror rot rrb rrg rrl rrn rrr rrt rtb rte rtg rtl rtn rto rtr rtt tbb tbe tbg tbl tbn tbo tbr tbt te- teb tee teg tel ten teo ter tet tgb tge tgg tgl tgn tgo tgr tgt tle tlg tll tln tlo tlr tlt tnb tne tng tnl tnn tno tnr tnt to- tob toe tog tol ton too tor tot trb tre trg trl trn tro trr trt ttb tte ttg ttl ttn tto ttr ttt