b-u bbb bbd bbi bbn bbs bbu bdb bdd bdi bds bdu bi- bib bid bii bin bis biu bnb bnd bni bnn bns bnu bsb bsd bsi bsn bss bsu bub bud bui bun bus buu dbb dbd dbi dbn dbs dbu ddb ddd ddi ddn dds ddu di- dib did dii din dis diu dnb dnd dni dnn dns dsb dsd dsi dsn dss dsu dub dud dui dun dus i-d ibb ibd ibi ibn ibs ibu idb idd idi idn ids idu iib iid iii iin iis iiu in- inb ind ini inn ins inu is- isb isd isi isn iss isu iu- iub iud iui ius n-i nbb nbd nbi nbn nbs nbu ndb ndd ndi ndn nds ndu nib nid nii nin nis niu nnb nni nnn nns nnu nsb nsd nsi nsn nss nsu nub nud nui nun nus nuu sbb sbd sbi sbn sbs sbu sdb sdd sdi sdn sds sdu sib sid sii sin sis siu snb snd sni snn sns snu ss- ssb ssd ssi ssn sss ssu sub sud sui sun sus suu ubb ubi ubn ubs ubu udb udd udi udn uds udu uib uid uii uin uis uiu un- unb und uni unn uns unu usb usd usi usn uss usu uun uus uuu