-er -ol b-p bbb bbe bbl bbo bbp bbr bbt be- beb bee bel beo bep ber bet bez blb ble bll blo blp blr blt blz bob boe bol boo bop bor bot boz bpb bpe bpl bpo bpp bpr bpt brb bre brl bro brp brr brt brz btb bte btl bto btp btr btt btz bze bzo bzp bzr bzz ebb ebe ebl ebo ebp ebr ebt eeb eee eel eeo eep eer eet elb ele ell elo elp elr elt elz eo- eob eoe eol eoo eop eor eot ep- epb epe epl epo epp epr ept epz erb ere erl ero erp err ert erz etb ete etl eto etp etr ett etz eze ezo ezr ezz l-p lbb lbe lbl lbo lbp lbr lbt leb lee lel leo lep ler let lez llb lle lll llo llp llr llt llz lob loe lol loo lop lor lot loz lpb lpe lpl lpo lpp lpr lpt lpz lrb lro lrp lrr lrt lrz ltb lte ltl lto ltp ltr ltt ltz lzo lzr ob- obb obe obl obo obp obr obt oeb oee oel oeo oep oer oet olb ole oll olo olp olt oo- oob ool ooo oop oor oot op- opb ope opl opo opp opr opt or- orb ore orl oro orp orr ort orz ot- otb ote otl oto otp otr ott otz oze ozo ozt ozz p-p pbb pbe pbl pbo pbp pbr pbt pbz peb pee pel peo pep per pet pez plb ple pll plo plp plr plt plz pob poe pol poo pop por pot poz ppb ppe ppl ppo ppp ppr ppt ppz prb pre prl pro prp prr prt prz pt- ptb pte ptl pto ptp ptr ptt ptz pzl pzp pzt rbb rbe rbl rbo rbp rbr rbt re- reb ree rel reo rep rer ret rez rle rll rlo rlp rlr rlt rob roe rol roo rop ror rot roz rpb rpe rpl rpo rpp rpr rpt rpz rrb rrl rrp rrr rrt rtb rte rtl rto rtp rtr rtt rtz rzb rze rzo tbb tbe tbl tbo tbp tbr tbt tbz te- teb tee tel teo tep ter tet tez tle tll tlo tlp tlr tlt tlz to- tob toe tol too top tor tot toz tpb tpe tpl tpo tpp tpr tpt tpz trb tre trl tro trp trr trt trz ttb tte ttl tto ttp ttr ttt tze zbb zbl zbr zbt zeb zee zel zeo zep zer zet zez zlr zlt zo- zob zoe zol zoo zor zot zpe zpl zpo zpp zpr zpt zrl zro zrp zte ztl ztr zzr zzt zzz