bbb bbd bbi bbn bbo bbs bdb bdd bdi bdo bds bi- bib bid bii bin bio bis bnb bnd bni bnn bno bns bob bod boi bon boo bos bsb bsd bsi bsn bso bss dbb dbd dbi dbn dbo dbs ddb ddd ddi ddn ddo dds di- dib did dii din dio dis dnb dnd dni dnn dno dns dob dod doi don doo dos dsb dsd dsi dsn dso dss i-d ibb ibd ibi ibn ibo ibs idb idd idi idn ido ids iib iid iii iin iio iis in- inb ind ini inn ino ins io- iob iod ioi ion ioo ios is- isb isd isi isn iso iss n-i nbb nbd nbi nbn nbo nbs ndb ndd ndi ndn ndo nds nib nid nii nin nio nis nnb nni nnn nno nns no- nob nod noi non noo nos nsb nsd nsi nsn nso nss o-i ob- obb obd obi obn obo obs odb odd odi odn odo ods oib oid oii oin oio ois on- onb ond oni onn ono ons oo- oob ood ooi oon ooo oos os- osb osd osi osn oso oss sbb sbd sbi sbn sbo sbs sdb sdd sdi sdn sdo sds sib sid sii sin sio sis snb snd sni snn sno sns sob sod soi son soo sos ss- ssb ssd ssi ssn sso sss