b-p bbb bbd bbi bbn bbo bbp bbs bdb bdd bdi bdo bdp bds bi- bib bid bii bin bio bip bis bnb bnd bni bnn bno bnp bns bob bod boi bon boo bop bos bpb bpd bpi bpn bpo bpp bps bsb bsd bsi bsn bso bsp bss dbb dbd dbi dbn dbo dbp dbs ddb ddd ddi ddn ddo ddp dds di- dib did dii din dio dip dis dnb dnd dni dnn dno dnp dns dob dod doi don doo dop dos dpb dpd dpi dpn dpo dpp dps dsb dsd dsi dsn dso dsp dss i-d ibb ibd ibi ibn ibo ibp ibs idb idd idi idn ido idp ids iib iid iii iin iio iip iis in- inb ind ini inn ino inp ins io- iob iod ioi ion ioo iop ios ipb ipd ipi ipn ipo ipp ips is- isb isd isi isn iso isp iss n-i nbb nbd nbi nbn nbo nbp nbs ndb ndd ndi ndn ndo ndp nds nib nid nii nin nio nip nis nnb nni nnn nno nnp nns no- nob nod noi non noo nop nos npb npd npi npn npo npp nps nsb nsd nsi nsn nso nsp nss o-i ob- obb obd obi obn obo obp obs odb odd odi odn odo odp ods oib oid oii oin oio oip ois on- onb ond oni onn ono onp ons oo- oob ood ooi oon ooo oop oos op- opb opd opi opn opo opp ops os- osb osd osi osn oso osp oss p-p pbb pbd pbi pbn pbo pbp pbs pdb pdd pdi pdn pdo pdp pds pib pid pii pin pio pip pis pn- pnb pnd pni pnn pno pnp pns pob pod poi pon poo pop pos ppb ppd ppi ppn ppo ppp pps ps- psb psd psi psn pso psp pss sbb sbd sbi sbn sbo sbp sbs sdb sdd sdi sdn sdo sdp sds sib sid sii sin sio sip sis snb snd sni snn sno snp sns sob sod soi son soo sop sos spb spd spi spn spo spp sps ss- ssb ssd ssi ssn sso ssp sss