b-p bbb bbn bbp bbr bbs bby bnb bnn bnp bnr bns bnz bpb bpn bpp bpr bps bpy brb brn brp brr brs bry brz bsb bsn bsp bsr bss bsy by- byn byp byr bys byz bzn bzp bzr bzs bzz nbb nbn nbp nbr nbs nnb nnn nnp nns nnz npb npn npp npr nps npz nrb nrn nrp nrr nrs nry nrz nsb nsn nsp nsr nss nsy nsz nyn nyp nys nyy nzb nzp nzs nzz p-p pbb pbn pbp pbr pbs pby pbz pn- pnb pnn pnp pnr pns pny ppb ppn ppp ppr pps ppz prb prn prp prr prs pry prz ps- psb psn psp psr pss psy py- pyb pyn pyr pys pzp rbb rbn rbp rbr rbs rnb rnn rnp rnr rns rny rnz rpb rpn rpp rpr rps rpz rrb rrn rrp rrr rrs rsb rsn rsp rsr rss ry- ryn ryr rys ryy ryz rzb rzy sbb sbn sbp sbr sbs sby snb snn snp snr sns sny spb spn spp spr sps spy spz sr- srb srn srp srr srs sry ss- ssb ssn ssp ssr sss ssz sy- syb syn syp syr sys szp szr ybp ybr ybs yby ybz ynn ynp yns yny yps yrn yrp yrs ysb ysp ysr yss ysy ysz yyb yys yyy yyz yzb yzr yzy zbb zbr zbs zby znn znp zns zpp zpr zrp zrs zsz zzr zzs zzy zzz