-er -ol bbb bbd bbe bbg bbl bbn bbo bbr bdb bdd bde bdg bdl bdo bdr be- beb bed bee beg bel ben beo ber bgb bgd bge bgg bgl bgn bgo bgr blb bld ble blg bll bln blo blr bnb bnd bne bng bnl bnn bno bnr bob bod boe bog bol bon boo bor brb brd bre brg brl brn bro brr dbb dbd dbe dbg dbl dbn dbo dbr ddb ddd dde ddg ddl ddn ddo ddr de- deb ded dee deg del den deo der dgd dge dgg dgl dgn dgr dl- dlb dld dle dlg dll dlo dlr dnb dnd dne dng dnl dnn dno dnr dob dod doe dog dol don doo dor drb drd dre drg drl drn dro drr ebb ebd ebe ebg ebl ebn ebo ebr ed- edb edd ede edg edl edn edo edr eeb eed eee eeg eel een eeo eer egb egd ege egg egl egn ego egr elb eld ele elg ell eln elo elr en- enb end ene eng enl enn eno enr eo- eob eod eoe eog eol eon eoo eor erb erd ere erg erl ern ero err g-d gbd gbe gbg gbl gbn gbo gbr gdb gdd gde gdl gdn gdo gdr ge- geb ged gee geg gel gen geo ger ggb ggd ggg ggn ggo ggr glb gld gle glg gll gln glo glr gnb gnd gne gnl gnn gno gnr gob god goe gog gol gon goo gor grb grd gre grg grl grn gro grr lbb lbd lbe lbg lbl lbo lbr ldb ldd lde ldg ldl ldn ldo ldr leb led lee leg lel len leo ler lgb lgd lge lgg lgl lgn lgo lgr llb lld lle llg lll lln llo llr lnb lnd lne lng lnl lnn lno lnr lob lod loe log lol lon loo lor lrb lrd lrg lrn lro lrr nbb nbd nbe nbg nbl nbn nbo nbr ndb ndd nde ndg ndl ndn ndo ndr ne- neb ned nee neg nel nen neo ner ngb ngd nge ngg ngl ngn ngo nlb nld nle nlg nll nln nlo nlr nnb nne nng nnl nnn nno no- nob nod noe nog nol non noo nor nrb nrd nre nrg nrl nrn nro nrr ob- obb obd obe obg obl obn obo obr odb odd ode odg odl odn odo odr oeb oed oee oeg oel oen oeo oer ogd oge ogg ogl ogn ogo olb old ole olg oll oln olo on- onb ond one ong onl onn ono onr oo- oob ood oog ool oon ooo oor or- orb ord ore org orl orn oro orr rbb rbd rbe rbg rbl rbn rbo rbr rdb rdd rde rdg rdl rdn rdo rdr re- reb red ree reg rel ren reo rer rgb rgd rge rgg rgn rgo rgr rld rle rlg rll rln rlo rlr rnb rnd rng rnn rno rnr rob rod roe rog rol ron roo ror rrb rrd rrg rrl rrn rrr