-er -ol b-u bbb bbd bbe bbl bbo bbr bbu bdb bdd bde bdl bdo bdr bdu bdz be- beb bed bee bel beo ber beu bez blb bld ble bll blo blr blu blz bob bod boe bol boo bor bou boz brb brd bre brl bro brr bru brz bub bud bue bul buo bur buu buz bzd bze bzo bzr bzu bzz dbb dbd dbe dbl dbo dbr dbu dbz ddb ddd dde ddl ddo ddr ddu ddz de- deb ded dee del deo der deu dez dl- dlb dld dle dll dlo dlr dlu dob dod doe dol doo dor dou doz drb drd dre drl dro drr dru drz dub dud due dul duo dur duz dzb dzd dze dzo dzr dzu ebb ebd ebe ebl ebo ebr ebu ed- edb edd ede edl edo edr edu eeb eed eee eel eeo eer elb eld ele ell elo elr elu elz eo- eob eod eoe eol eoo eor eou erb erd ere erl ero err eru erz eu- eub eud eue eul eur eze ezo ezr ezz lbb lbd lbe lbl lbo lbr lbu ldb ldd lde ldl ldo ldr ldu leb led lee lel leo ler leu lez llb lld lle lll llo llr llu llz lob lod loe lol loo lor lou loz lrb lrd lro lrr lru lrz lub lud lue lul luo lur luu luz lzo lzr lzu ob- obb obd obe obl obo obr obu odb odd ode odl odo odr odu oeb oed oee oel oeo oer olb old ole oll olo olu oo- oob ood ool ooo oor or- orb ord ore orl oro orr oru orz ou- oud oue oul ouo our oze ozo ozu ozz rbb rbd rbe rbl rbo rbr rbu rdb rdd rde rdl rdo rdr rdu re- reb red ree rel reo rer reu rez rld rle rll rlo rlr rlu rob rod roe rol roo ror rou roz rrb rrd rrl rrr rru rub rud rue ruo rur ruu ruz rzb rze rzo ubb ube ubl ubo ubr ubu udb udd ude udl udo udr udu ueb ued uee uel uer ulb uld ule ull ulo ulr ulu uob uod uoe uol uoo uor ur- urb urd ure url uro urr uru urz uue uur uuu uzb uzo uzu zbb zbl zbr zeb zed zee zel zeo zer zez zlr zo- zob zod zoe zol zoo zor zou zrl zro zub zud zul zur zuz zzr zzz