-ic b-u bbb bbc bbd bbi bbn bbr bbs bbu bcb bcc bcd bci bcn bcr bcs bcu bdb bdc bdd bdi bdr bds bdu bi- bib bic bid bii bin bir bis biu bnb bnc bnd bni bnn bnr bns bnu brb brd bri brn brr brs bru bsb bsc bsd bsi bsn bsr bss bsu bub buc bud bui bun bur bus buu c-- cbb cbc cbd cbi cbn cbr cbs cbu ccb ccc ccd cci ccn ccr ccs ccu cdb cdc cdd cdi cdn cdr cds cdu ci- cib cic cid cii cin cir cis ciu cn- cnb cnc cnd cni cnn cnr cns cnu crb crc crd cri crn crr crs cru csb csc csd csi csn csr css csu cub cuc cud cui cun cur cus cuu dbb dbc dbd dbi dbn dbr dbs dbu dcb dcc dcd dci dcn dcr dcs dcu ddb ddc ddd ddi ddn ddr dds ddu di- dib dic did dii din dir dis diu dnb dnc dnd dni dnn dnr dns drb drc drd dri drn drr drs dru dsb dsc dsd dsi dsn dsr dss dsu dub duc dud dui dun dur dus i-d ibb ibc ibd ibi ibn ibr ibs ibu icb icc icd ici icn icr ics icu idb idc idd idi idn idr ids idu iib iic iid iii iin iir iis iiu in- inb inc ind ini inn inr ins inu ir- irb irc ird iri irn irr irs iru is- isb isc isd isi isn isr iss isu iu- iub iuc iud iui iur ius n-i nbb nbc nbd nbi nbn nbr nbs nbu ncb ncc ncd nci ncn ncr ncs ncu ndb ndc ndd ndi ndn ndr nds ndu nib nic nid nii nin nir nis niu nnb nnc nni nnn nns nnu nrb nrc nrd nri nrn nrr nrs nru nsb nsc nsd nsi nsn nsr nss nsu nub nuc nud nui nun nur nus nuu rbb rbc rbd rbi rbn rbr rbs rbu rcb rcc rcd rci rcn rcr rcs rcu rdb rdc rdd rdi rdn rdr rds rdu rib ric rid rii rin rir ris rnb rnc rnd rni rnn rnr rns rnu rrb rrc rrd rri rrn rrr rrs rru rsb rsc rsd rsi rsn rsr rss rsu rub ruc rud rui run rur rus ruu sbb sbc sbd sbi sbn sbr sbs sbu scb scc scd sci scn scr scs scu sdb sdc sdd sdi sdn sdr sds sdu sib sic sid sii sin sir sis siu snb snc snd sni snn snr sns snu sr- srb src srd sri srn srr srs ss- ssb ssc ssd ssi ssn ssr sss ssu sub suc sud sui sun sur sus suu ubb ubc ubi ubn ubr ubs ubu ucb ucc ucd uci ucn ucr ucs ucu udb udc udd udi udn udr uds udu uib uic uid uii uin uir uis uiu un- unb unc und uni unn unr uns unu ur- urb urc urd uri urn urr urs uru usb usc usd usi usn usr uss usu uuc uun uur uus uuu