-ic b-u bbb bbc bbd bbi bbn bbo bbs bbu bcb bcc bcd bci bcn bco bcs bcu bdb bdc bdd bdi bdo bds bdu bi- bib bic bid bii bin bio bis biu bnb bnc bnd bni bnn bno bns bnu bob boc bod boi bon boo bos bou bsb bsc bsd bsi bsn bso bss bsu bub buc bud bui bun buo bus buu c-- cbb cbc cbd cbi cbn cbo cbs cbu ccb ccc ccd cci ccn cco ccs ccu cdb cdc cdd cdi cdn cdo cds cdu ci- cib cic cid cii cin cio cis ciu cn- cnb cnc cnd cni cnn cno cns cnu co- cob coc cod coi con coo cos cou csb csc csd csi csn cso css csu cub cuc cud cui cun cuo cus cuu dbb dbc dbd dbi dbn dbo dbs dbu dcb dcc dcd dci dcn dco dcs dcu ddb ddc ddd ddi ddn ddo dds ddu di- dib dic did dii din dio dis diu dnb dnc dnd dni dnn dno dns dob doc dod doi don doo dos dou dsb dsc dsd dsi dsn dso dss dsu dub duc dud dui dun duo dus i-d ibb ibc ibd ibi ibn ibo ibs ibu icb icc icd ici icn ico ics icu idb idc idd idi idn ido ids idu iib iic iid iii iin iio iis iiu in- inb inc ind ini inn ino ins inu io- iob ioc iod ioi ion ioo ios iou is- isb isc isd isi isn iso iss isu iu- iub iuc iud iui ius n-i nbb nbc nbd nbi nbn nbo nbs nbu ncb ncc ncd nci ncn nco ncs ncu ndb ndc ndd ndi ndn ndo nds ndu nib nic nid nii nin nio nis niu nnb nnc nni nnn nno nns nnu no- nob noc nod noi non noo nos nou nsb nsc nsd nsi nsn nso nss nsu nub nuc nud nui nun nuo nus nuu o-i ob- obb obc obd obi obn obo obs obu oc- ocb occ ocd oci ocn oco ocs ocu odb odc odd odi odn odo ods odu oib oic oid oii oin oio ois oiu on- onb onc ond oni onn ono ons onu oo- oob ooc ood ooi oon ooo oos os- osb osc osd osi osn oso oss osu ou- ouc oud oui oun ouo ous sbb sbc sbd sbi sbn sbo sbs sbu scb scc scd sci scn sco scs scu sdb sdc sdd sdi sdn sdo sds sdu sib sic sid sii sin sio sis siu snb snc snd sni snn sno sns snu sob soc sod soi son soo sos sou ss- ssb ssc ssd ssi ssn sso sss ssu sub suc sud sui sun suo sus suu ubb ubc ubi ubn ubo ubs ubu ucb ucc ucd uci ucn uco ucs ucu udb udc udd udi udn udo uds udu uib uic uid uii uin uio uis uiu un- unb unc und uni unn uno uns unu uob uoc uod uon uoo uos usb usc usd usi usn uso uss usu uuc uun uus uuu