-er -ol b-p bbb bbe bbg bbl bbo bbp bbr bbt be- beb bee beg bel beo bep ber bet bgb bge bgg bgl bgo bgp bgr bgt blb ble blg bll blo blp blr blt bob boe bog bol boo bop bor bot bpb bpe bpg bpl bpo bpp bpr bpt brb bre brg brl bro brp brr brt btb bte btg btl bto btp btr btt ebb ebe ebg ebl ebo ebp ebr ebt eeb eee eeg eel eeo eep eer eet egb ege egg egl ego egp egr egt elb ele elg ell elo elp elr elt eo- eob eoe eog eol eoo eop eor eot ep- epb epe epg epl epo epp epr ept erb ere erg erl ero erp err ert etb ete etg etl eto etp etr ett g-p gbe gbg gbl gbo gbp gbr gbt ge- geb gee geg gel geo gep ger get ggb ggg ggo ggp ggr ggt glb gle glg gll glo glp glr glt gob goe gog gol goo gop gor got gpb gpe gpg gpl gpo gpp gpr gpt grb gre grg grl gro grp grr grt gtb gte gtg gtl gto gtp gtr gtt l-p lbb lbe lbg lbl lbo lbp lbr lbt leb lee leg lel leo lep ler let lgb lge lgg lgl lgo lgp lgr lgt llb lle llg lll llo llp llr llt lob loe log lol loo lop lor lot lpb lpe lpg lpl lpo lpp lpr lpt lrb lrg lro lrp lrr lrt ltb lte ltg ltl lto ltp ltr ltt ob- obb obe obg obl obo obp obr obt oeb oee oeg oel oeo oep oer oet oge ogg ogl ogo ogp ogt olb ole olg oll olo olp olt oo- oob oog ool ooo oop oor oot op- opb ope opg opl opo opp opr opt or- orb ore org orl oro orp orr ort ot- otb ote otg otl oto otp otr ott p-p pbb pbe pbg pbl pbo pbp pbr pbt peb pee peg pel peo pep per pet pgb pge pgg pgl pgo pgp pgr pgt plb ple plg pll plo plp plr plt pob poe pog pol poo pop por pot ppb ppe ppg ppl ppo ppp ppr ppt prb pre prg prl pro prp prr prt pt- ptb pte ptg ptl pto ptp ptr ptt rbb rbe rbg rbl rbo rbp rbr rbt re- reb ree reg rel reo rep rer ret rgb rge rgg rgo rgp rgr rgt rle rlg rll rlo rlp rlr rlt rob roe rog rol roo rop ror rot rpb rpe rpg rpl rpo rpp rpr rpt rrb rrg rrl rrp rrr rrt rtb rte rtg rtl rto rtp rtr rtt tbb tbe tbg tbl tbo tbp tbr tbt te- teb tee teg tel teo tep ter tet tgb tge tgg tgl tgo tgp tgr tgt tle tlg tll tlo tlp tlr tlt to- tob toe tog tol too top tor tot tpb tpe tpg tpl tpo tpp tpr tpt trb tre trg trl tro trp trr trt ttb tte ttg ttl tto ttp ttr ttt