b-u bbb bbd bbi bbn bbo bbr bbs bbu bdb bdd bdi bdo bdr bds bdu bi- bib bid bii bin bio bir bis biu bnb bnd bni bnn bno bnr bns bnu bob bod boi bon boo bor bos bou brb brd bri brn bro brr brs bru bsb bsd bsi bsn bso bsr bss bsu bub bud bui bun buo bur bus buu dbb dbd dbi dbn dbo dbr dbs dbu ddb ddd ddi ddn ddo ddr dds ddu di- dib did dii din dio dir dis diu dnb dnd dni dnn dno dnr dns dob dod doi don doo dor dos dou drb drd dri drn dro drr drs dru dsb dsd dsi dsn dso dsr dss dsu dub dud dui dun duo dur dus i-d ibb ibd ibi ibn ibo ibr ibs ibu idb idd idi idn ido idr ids idu iib iid iii iin iio iir iis iiu in- inb ind ini inn ino inr ins inu io- iob iod ioi ion ioo ior ios iou ir- irb ird iri irn iro irr irs iru is- isb isd isi isn iso isr iss isu iu- iub iud iui iur ius n-i nbb nbd nbi nbn nbo nbr nbs nbu ndb ndd ndi ndn ndo ndr nds ndu nib nid nii nin nio nir nis niu nnb nni nnn nno nns nnu no- nob nod noi non noo nor nos nou nrb nrd nri nrn nro nrr nrs nru nsb nsd nsi nsn nso nsr nss nsu nub nud nui nun nuo nur nus nuu o-i ob- obb obd obi obn obo obr obs obu odb odd odi odn odo odr ods odu oib oid oii oin oio oir ois oiu on- onb ond oni onn ono onr ons onu oo- oob ood ooi oon ooo oor oos or- orb ord ori orn oro orr ors oru os- osb osd osi osn oso osr oss osu ou- oud oui oun ouo our ous rbb rbd rbi rbn rbo rbr rbs rbu rdb rdd rdi rdn rdo rdr rds rdu rib rid rii rin rio rir ris rnb rnd rni rnn rno rnr rns rnu rob rod roi ron roo ror ros rou rrb rrd rri rrn rrr rrs rru rsb rsd rsi rsn rso rsr rss rsu rub rud rui run ruo rur rus ruu sbb sbd sbi sbn sbo sbr sbs sbu sdb sdd sdi sdn sdo sdr sds sdu sib sid sii sin sio sir sis siu snb snd sni snn sno snr sns snu sob sod soi son soo sor sos sou sr- srb srd sri srn sro srr srs ss- ssb ssd ssi ssn sso ssr sss ssu sub sud sui sun suo sur sus suu ubb ubi ubn ubo ubr ubs ubu udb udd udi udn udo udr uds udu uib uid uii uin uio uir uis uiu un- unb und uni unn uno unr uns unu uob uod uon uoo uor uos ur- urb urd uri urn uro urr urs uru usb usd usi usn uso usr uss usu uun uur uus uuu