-er -ey b-p bbb bbe bbn bbo bbp bbr bby be- beb bee ben beo bep ber bey bez bnb bne bnn bno bnp bnr bnz bob boe bon boo bop bor boy boz bpb bpe bpn bpo bpp bpr bpy brb bre brn bro brp brr bry brz by- bye byn byo byp byr byz bze bzn bzo bzp bzr bzz ebb ebe ebn ebo ebp ebr eby eeb eee een eeo eep eer eey en- enb ene enn eno enp enr eny enz eo- eob eoe eon eoo eop eor ep- epb epe epn epo epp epr epz erb ere ern ero erp err ery erz eye eyn eyo eyp eyr eze ezo ezr ezz nbb nbe nbn nbo nbp nbr ne- neb nee nen neo nep ner ney nez nnb nne nnn nno nnp nnz no- nob noe non noo nop nor noy noz npb npe npn npo npp npr npz nrb nre nrn nro nrp nrr nry nrz nye nyn nyo nyp nyy nzb nze nzo nzp nzz ob- obb obe obn obo obp obr oby oeb oee oen oeo oep oer oey on- onb one onn ono onp onr ony oo- oob oon ooo oop oor op- opb ope opn opo opp opr opy or- orb ore orn oro orp orr ory orz oye oyo oze ozo ozz p-p pbb pbe pbn pbo pbp pbr pby pbz peb pee pen peo pep per pey pez pn- pnb pne pnn pno pnp pnr pny pob poe pon poo pop por poy poz ppb ppe ppn ppo ppp ppr ppz prb pre prn pro prp prr pry prz py- pyb pye pyn pyo pyr pzp rbb rbe rbn rbo rbp rbr re- reb ree ren reo rep rer rey rez rnb rnn rno rnp rnr rny rnz rob roe ron roo rop ror roy roz rpb rpe rpn rpo rpp rpr rpz rrb rrn rrp rrr ry- rye ryn ryo ryr ryy ryz rzb rze rzo rzy ybe ybp ybr yby ybz yeb yee yen yeo yep yer yey yez yne ynn ynp yny yob yoe yon yoo yop yor yoy ypo yre yrn yro yrp yyb yye yyy yyz yzb yzr yzy zbb zbr zby zeb zee zen zeo zep zer zez zne znn zno znp zo- zob zoe zon zoo zor zpe zpo zpp zpr zro zrp zzr zzy zzz