b-u bbb bbd bbg bbi bbo bbr bbs bbu bdb bdd bdg bdi bdo bdr bds bdu bgb bgd bgg bgi bgo bgr bgs bgu bi- bib bid big bii bio bir bis biu bob bod bog boi boo bor bos bou brb brd brg bri bro brr brs bru bsb bsd bsg bsi bso bsr bss bsu bub bud bug bui buo bur bus buu dbb dbd dbg dbi dbo dbr dbs dbu ddb ddd ddg ddi ddo ddr dds ddu dgd dgg dgi dgr dgs dgu di- dib did dig dii dio dir dis diu dob dod dog doi doo dor dos dou drb drd drg dri dro drr drs dru dsb dsd dsg dsi dso dsr dss dsu dub dud dug dui duo dur dus g-d gbd gbg gbi gbo gbr gbs gbu gdb gdd gdi gdo gdr gds gdu ggb ggd ggg ggi ggo ggr ggs ggu gib gid gig gii gio gir gis giu gob god gog goi goo gor gos gou grb grd grg gri gro grr grs gru gsb gsd gsg gsi gso gsr gss gsu gu- gub gud gug gui guo gur gus guu i-d ibb ibd ibg ibi ibo ibr ibs ibu idb idd idg idi ido idr ids idu igb igd igg igi igo igr igs igu iib iid iii iio iir iis iiu io- iob iod iog ioi ioo ior ios iou ir- irb ird irg iri iro irr irs iru is- isb isd isg isi iso isr iss isu iu- iub iud iug iui iur ius o-i ob- obb obd obg obi obo obr obs obu odb odd odg odi odo odr ods odu ogd ogg ogi ogo ogs oib oid oii oio oir ois oiu oo- oob ood oog ooi ooo oor oos or- orb ord org ori oro orr ors oru os- osb osd osg osi oso osr oss osu ou- oud oui ouo our ous rbb rbd rbg rbi rbo rbr rbs rbu rdb rdd rdg rdi rdo rdr rds rdu rgb rgd rgg rgi rgo rgr rgs rib rid rig rii rio rir ris rob rod rog roi roo ror ros rou rrb rrd rrg rri rrr rrs rru rsb rsd rsg rsi rso rsr rss rsu rub rud rug rui ruo rur rus ruu sbb sbd sbg sbi sbo sbr sbs sbu sdb sdd sdg sdi sdo sdr sds sdu sgb sgd sgg sgi sgo sgr sgs sgu sib sid sig sii sio sir sis siu sob sod sog soi soo sor sos sou sr- srb srd srg sri sro srr srs ss- ssb ssd ssg ssi sso ssr sss ssu sub sud sug sui suo sur sus suu ubb ubg ubi ubo ubr ubs ubu udb udd udg udi udo udr uds udu ugb ugg ugi ugo ugr ugs ugu uib uid uig uii uio uir uis uiu uob uod uog uoo uor uos ur- urb urd urg uri uro urr urs uru usb usd usg usi uso usr uss usu uug uur uus uuu