-ol bbb bbe bbg bbl bbn bbo be- beb bee beg bel ben beo bgb bge bgg bgl bgn bgo blb ble blg bll bln blo bnb bne bng bnl bnn bno bob boe bog bol bon boo ebb ebe ebg ebl ebn ebo eeb eee eeg eel een eeo egb ege egg egl egn ego elb ele elg ell eln elo en- enb ene eng enl enn eno eo- eob eoe eog eol eon eoo gbe gbg gbl gbn gbo ge- geb gee geg gel gen geo ggb ggg ggn ggo glb gle glg gll gln glo gnb gne gnl gnn gno gob goe gog gol gon goo lbb lbe lbg lbl lbo leb lee leg lel len leo lgb lge lgg lgl lgn lgo llb lle llg lll lln llo lnb lne lng lnl lnn lno lob loe log lol lon loo nbb nbe nbg nbl nbn nbo ne- neb nee neg nel nen neo ngb nge ngg ngl ngn ngo nlb nle nlg nll nln nlo nnb nne nng nnl nnn nno no- nob noe nog nol non noo ob- obb obe obg obl obn obo oeb oee oeg oel oen oeo oge ogg ogl ogn ogo olb ole olg oll oln olo on- onb one ong onl onn ono oo- oob oog ool oon ooo