-er -ol -up b-p b-u bbb bbd bbe bbl bbo bbp bbr bbu bdb bdd bde bdl bdo bdp bdr bdu be- beb bed bee bel beo bep ber beu blb bld ble bll blo blp blr blu bob bod boe bol boo bop bor bou bpb bpd bpe bpl bpo bpp bpr bpu brb brd bre brl bro brp brr bru bub bud bue bul buo bup bur buu dbb dbd dbe dbl dbo dbp dbr dbu ddb ddd dde ddl ddo ddp ddr ddu de- deb ded dee del deo dep der deu dl- dlb dld dle dll dlo dlp dlr dlu dob dod doe dol doo dop dor dou dpb dpd dpe dpl dpo dpp dpr dpu drb drd dre drl dro drp drr dru dub dud due dul duo dup dur ebb ebd ebe ebl ebo ebp ebr ebu ed- edb edd ede edl edo edp edr edu eeb eed eee eel eeo eep eer elb eld ele ell elo elp elr elu eo- eob eod eoe eol eoo eop eor eou ep- epb epd epe epl epo epp epr epu erb erd ere erl ero erp err eru eu- eub eud eue eul eup eur l-p lbb lbd lbe lbl lbo lbp lbr lbu ldb ldd lde ldl ldo ldp ldr ldu leb led lee lel leo lep ler leu llb lld lle lll llo llp llr llu lob lod loe lol loo lop lor lou lpb lpd lpe lpl lpo lpp lpr lpu lrb lrd lro lrp lrr lru lub lud lue lul luo lup lur luu ob- obb obd obe obl obo obp obr obu odb odd ode odl odo odp odr odu oeb oed oee oel oeo oep oer olb old ole oll olo olp olu oo- oob ood ool ooo oop oor op- opb opd ope opl opo opp opr or- orb ord ore orl oro orp orr oru ou- oud oue oul ouo oup our p-p pbb pbd pbe pbl pbo pbp pbr pbu pdb pdd pde pdl pdo pdp pdr pdu peb ped pee pel peo pep per peu plb pld ple pll plo plp plr plu pob pod poe pol poo pop por pou ppb ppd ppe ppl ppo ppp ppr ppu prb prd pre prl pro prp prr pru pub pud pue pul pup pur puu rbb rbd rbe rbl rbo rbp rbr rbu rdb rdd rde rdl rdo rdp rdr rdu re- reb red ree rel reo rep rer reu rld rle rll rlo rlp rlr rlu rob rod roe rol roo rop ror rou rpb rpd rpe rpl rpo rpp rpr rpu rrb rrd rrl rrp rrr rru rub rud rue ruo rup rur ruu ubb ube ubl ubo ubp ubr ubu udb udd ude udl udo udp udr udu ueb ued uee uel uep uer ulb uld ule ull ulo ulp ulr ulu uob uod uoe uol uoo uop uor up- upb upd upe upo upp upr upu ur- urb urd ure url uro urp urr uru uue uur uuu