-er -ol bbb bbe bbg bbh bbl bbo bbr bbs be- beb bee beg beh bel beo ber bes bgb bge bgg bgh bgl bgo bgr bgs bhb bhe bhg bhh bhl bho bhr bhs blb ble blg blh bll blo blr bls bob boe bog boh bol boo bor bos brb bre brg brh brl bro brr brs bsb bse bsg bsh bsl bso bsr bss ebb ebe ebg ebh ebl ebo ebr ebs eeb eee eeg eel eeo eer ees egb ege egg egh egl ego egr egs ehb ehe ehg ehh ehl eho ehr ehs elb ele elg elh ell elo elr els eo- eob eoe eog eoh eol eoo eor eos erb ere erg erh erl ero err ers es- esb ese esg esh esl eso esr ess gbe gbg gbh gbl gbo gbr gbs ge- geb gee geg geh gel geo ger ges ggb ggg ggh ggo ggr ggs ghb ghe ghg ghh ghl gho ghr ghs glb gle glg glh gll glo glr gls gob goe gog goh gol goo gor gos grb gre grg grh grl gro grr grs gsb gse gsg gsl gso gsr gss hbb hbe hbg hbh hbl hbo hbr hbs he- heb hee heg heh hel heo her hes hgb hge hgg hgh hgl hgo hgr hgs hhb hhe hhg hhh hhl hho hhr hhs hlb hle hlg hlh hll hlo hlr hls hob hoe hog hoh hol hoo hor hos hr- hrb hre hrg hrh hrl hro hrr hrs hsb hse hsg hsh hsl hsr hss lbb lbe lbg lbh lbl lbo lbr lbs leb lee leg leh lel leo ler les lgb lge lgg lgh lgl lgo lgr lgs lhb lhh lho lhr lhs llb lle llg lll llo llr lls lob loe log loh lol loo lor los lrb lrg lrh lro lrr lrs lsb lse lsg lsh lsl lso lsr lss ob- obb obe obg obh obl obo obr obs oeb oee oeg oeh oel oeo oer oes oge ogg ogh ogl ogo ogs ohe ohg ohh ohl oho ohr ohs olb ole olg oll olo ols oo- oob oog ooh ool ooo oor oos or- orb ore org orh orl oro orr ors os- osb ose osg osh osl oso osr oss rbb rbe rbg rbh rbl rbo rbr rbs re- reb ree reg reh rel reo rer res rgb rge rgg rgh rgo rgr rgs rh- rhb rhe rhg rhh rhl rho rhr rhs rle rlg rlh rll rlo rlr rls rob roe rog roh rol roo ror ros rrb rrg rrh rrl rrr rrs rsb rse rsg rsh rsl rso rsr rss sbb sbe sbg sbh sbl sbo sbr sbs se- seb see seg seh sel seo ser ses sgb sge sgg sgh sgl sgo sgr sgs sh- shb she shg shh shl sho shr shs slb sle slg slh sll slo slr sls sob soe sog soh sol soo sor sos sr- srb sre srg srh srl sro srr srs ss- ssb sse ssg ssh ssl sso ssr sss