b-p bbb bbi bbn bbo bbp bbs bby bi- bib bii bin bio bip bis biy bnb bni bnn bno bnp bns bob boi bon boo bop bos boy bpb bpi bpn bpo bpp bps bpy bsb bsi bsn bso bsp bss bsy by- byi byn byo byp bys ibb ibi ibn ibo ibp ibs iby iib iii iin iio iip iis in- inb ini inn ino inp ins iny io- iob ioi ion ioo iop ios ipb ipi ipn ipo ipp ips ipy is- isb isi isn iso isp iss isy iyo iys iyy n-i nbb nbi nbn nbo nbp nbs nib nii nin nio nip nis nnb nni nnn nno nnp nns no- nob noi non noo nop nos noy npb npi npn npo npp nps nsb nsi nsn nso nsp nss nsy nyn nyo nyp nys nyy o-i ob- obb obi obn obo obp obs oby oib oii oin oio oip ois on- onb oni onn ono onp ons ony oo- oob ooi oon ooo oop oos op- opb opi opn opo opp ops opy os- osb osi osn oso osp oss oyi oyo oys p-p pbb pbi pbn pbo pbp pbs pby pib pii pin pio pip pis pn- pnb pni pnn pno pnp pns pny pob poi pon poo pop pos poy ppb ppi ppn ppo ppp pps ps- psb psi psn pso psp pss psy py- pyb pyn pyo pys sbb sbi sbn sbo sbp sbs sby sib sii sin sio sip sis snb sni snn sno snp sns sny sob soi son soo sop sos soy spb spi spn spo spp sps spy ss- ssb ssi ssn sso ssp sss sy- syb syi syn syp sys ybi ybp ybs yby yii yin yio yip yis ynn ynp yns yny yob yoi yon yoo yop yos yoy ypo yps ysb ysi yso ysp yss ysy yyb yys yyy