b-u bbb bbd bbi bbn bbo bbs bbu bdb bdd bdi bdo bds bdu bi- bib bid bii bin bio bis biu bnb bnd bni bnn bno bns bnu bob bod boi bon boo bos bou bsb bsd bsi bsn bso bss bsu bub bud bui bun buo bus buu dbb dbd dbi dbn dbo dbs dbu ddb ddd ddi ddn ddo dds ddu di- dib did dii din dio dis diu dnb dnd dni dnn dno dns dob dod doi don doo dos dou dsb dsd dsi dsn dso dss dsu dub dud dui dun duo dus i-d ibb ibd ibi ibn ibo ibs ibu idb idd idi idn ido ids idu iib iid iii iin iio iis iiu in- inb ind ini inn ino ins inu io- iob iod ioi ion ioo ios iou is- isb isd isi isn iso iss isu iu- iub iud iui ius n-i nbb nbd nbi nbn nbo nbs nbu ndb ndd ndi ndn ndo nds ndu nib nid nii nin nio nis niu nnb nni nnn nno nns nnu no- nob nod noi non noo nos nou nsb nsd nsi nsn nso nss nsu nub nud nui nun nuo nus nuu o-i ob- obb obd obi obn obo obs obu odb odd odi odn odo ods odu oib oid oii oin oio ois oiu on- onb ond oni onn ono ons onu oo- oob ood ooi oon ooo oos os- osb osd osi osn oso oss osu ou- oud oui oun ouo ous sbb sbd sbi sbn sbo sbs sbu sdb sdd sdi sdn sdo sds sdu sib sid sii sin sio sis siu snb snd sni snn sno sns snu sob sod soi son soo sos sou ss- ssb ssd ssi ssn sso sss ssu sub sud sui sun suo sus suu ubb ubi ubn ubo ubs ubu udb udd udi udn udo uds udu uib uid uii uin uio uis uiu un- unb und uni unn uno uns unu uob uod uon uoo uos usb usd usi usn uso uss usu uun uus uuu