-er -ol bbb bbe bbg bbh bbl bbo bbr be- beb bee beg beh bel beo ber bez bgb bge bgg bgh bgl bgo bgr bgz bhb bhe bhg bhh bhl bho bhr blb ble blg blh bll blo blr blz bob boe bog boh bol boo bor boz brb bre brg brh brl bro brr brz bze bzh bzo bzr bzz ebb ebe ebg ebh ebl ebo ebr eeb eee eeg eel eeo eer egb ege egg egh egl ego egr ehb ehe ehg ehh ehl eho ehr elb ele elg elh ell elo elr elz eo- eob eoe eog eoh eol eoo eor erb ere erg erh erl ero err erz eze ezh ezo ezr ezz gbe gbg gbh gbl gbo gbr gbz ge- geb gee geg geh gel geo ger gez ggb ggg ggh ggo ggr ggz ghb ghe ghg ghh ghl gho ghr ghz glb gle glg glh gll glo glr glz gob goe gog goh gol goo gor goz grb gre grg grh grl gro grr gzo gzr hbb hbe hbg hbh hbl hbo hbr hbz he- heb hee heg heh hel heo her hez hgb hge hgg hgh hgl hgo hgr hhb hhe hhg hhh hhl hho hhr hhz hlb hle hlg hlh hll hlo hlr hlz hob hoe hog hoh hol hoo hor hr- hrb hre hrg hrh hrl hro hrr hrz hze hzl hzo lbb lbe lbg lbh lbl lbo lbr leb lee leg leh lel leo ler lez lgb lge lgg lgh lgl lgo lgr lhb lhh lho lhr lhz llb lle llg lll llo llr llz lob loe log loh lol loo lor loz lrb lrg lrh lro lrr lrz lzh lzo lzr ob- obb obe obg obh obl obo obr oeb oee oeg oeh oel oeo oer oge ogg ogh ogl ogo ohe ohg ohh ohl oho ohr olb ole olg oll olo oo- oob oog ooh ool ooo oor or- orb ore org orh orl oro orr orz oze ozo ozz rbb rbe rbg rbh rbl rbo rbr re- reb ree reg reh rel reo rer rez rgb rge rgg rgh rgo rgr rh- rhb rhe rhg rhh rhl rho rhr rle rlg rlh rll rlo rlr rob roe rog roh rol roo ror roz rrb rrg rrh rrl rrr rzb rze rzo z-g zbb zbl zbr zeb zee zeh zel zeo zer zez zgb zgg zhe zhl zho zhr zlr zo- zob zoe zog zol zoo zor zrh zrl zro zzr zzz