b-p bbb bbi bbn bbp bbr bby bi- bib bii bin bip bir biy biz bnb bni bnn bnp bnr bnz bpb bpi bpn bpp bpr bpy brb bri brn brp brr bry brz by- byi byn byp byr byz bzn bzp bzr bzz ibb ibi ibn ibp ibr iby ibz iib iii iin iip iir in- inb ini inn inp inr iny ipb ipi ipn ipp ipr ipy ir- irb iri irn irp irr iry iyr iyy izi izy izz n-i nbb nbi nbn nbp nbr nib nii nin nip nir niz nnb nni nnn nnp nnz npb npi npn npp npr npz nrb nri nrn nrp nrr nry nrz nyn nyp nyy nzb nzi nzp nzz p-p pbb pbi pbn pbp pbr pby pbz pib pii pin pip pir piz pn- pnb pni pnn pnp pnr pny ppb ppi ppn ppp ppr ppz prb pri prn prp prr pry prz py- pyb pyn pyr pzp rbb rbi rbn rbp rbr rib rii rin rip rir riy riz rnb rni rnn rnp rnr rny rnz rpb rpi rpn rpp rpr rpz rrb rri rrn rrp rrr ry- ryn ryr ryy ryz rzb rzy ybi ybp ybr yby ybz yii yin yip yir yiz ynn ynp yny yrn yrp yyb yyy yyz yzb yzr yzy zbb zbr zby zib zin zip zir ziz znn znp zpi zpp zpr zrp zzr zzy zzz