-ic bbb bbc bbd bbi bbn bbo bbs bbt bcb bcc bcd bci bcn bco bcs bct bdb bdc bdd bdi bdo bds bdt bi- bib bic bid bii bin bio bis bit bnb bnc bnd bni bnn bno bns bnt bob boc bod boi bon boo bos bot bsb bsc bsd bsi bsn bso bss bst btb btc btd bti btn bto bts btt c-- cbb cbc cbd cbi cbn cbo cbs cbt ccb ccc ccd cci ccn cco ccs cct cdb cdc cdd cdi cdn cdo cds cdt ci- cib cic cid cii cin cio cis cit cn- cnb cnc cnd cni cnn cno cns cnt co- cob coc cod coi con coo cos cot csb csc csd csi csn cso css cst ctb ctc ctd cti ctn cto cts ctt dbb dbc dbd dbi dbn dbo dbs dbt dcb dcc dcd dci dcn dco dcs dct ddb ddc ddd ddi ddn ddo dds ddt di- dib dic did dii din dio dis dit dnb dnc dnd dni dnn dno dns dnt dob doc dod doi don doo dos dot dsb dsc dsd dsi dsn dso dss dst dtb dtc dtd dti dtn dto dts dtt i-d ibb ibc ibd ibi ibn ibo ibs ibt icb icc icd ici icn ico ics ict idb idc idd idi idn ido ids idt iib iic iid iii iin iio iis iit in- inb inc ind ini inn ino ins int io- iob ioc iod ioi ion ioo ios iot is- isb isc isd isi isn iso iss ist itb itc itd iti itn ito its itt n-i nbb nbc nbd nbi nbn nbo nbs nbt ncb ncc ncd nci ncn nco ncs nct ndb ndc ndd ndi ndn ndo nds ndt nib nic nid nii nin nio nis nit nnb nnc nni nnn nno nns nnt no- nob noc nod noi non noo nos not nsb nsc nsd nsi nsn nso nss nst ntb ntc ntd nti ntn nto nts ntt o-i ob- obb obc obd obi obn obo obs obt oc- ocb occ ocd oci ocn oco ocs oct odb odc odd odi odn odo ods odt oib oic oid oii oin oio ois oit on- onb onc ond oni onn ono ons ont oo- oob ooc ood ooi oon ooo oos oot os- osb osc osd osi osn oso oss ost ot- otb otc otd oti otn oto ots ott sbb sbc sbd sbi sbn sbo sbs sbt scb scc scd sci scn sco scs sct sdb sdc sdd sdi sdn sdo sds sdt sib sic sid sii sin sio sis sit snb snc snd sni snn sno sns snt sob soc sod soi son soo sos sot ss- ssb ssc ssd ssi ssn sso sss sst stb stc std sti stn sto sts stt tbb tbc tbd tbi tbn tbo tbs tbt tcb tcc tcd tci tcn tco tcs tct tdb tdc tdd tdi tdn tdo tds tdt tib tic tid tii tin tio tis tit tnb tnc tnd tni tnn tno tns tnt to- tob toc tod toi ton too tos tot tsb tsc tsd tsi tsn tso tss tst ttb ttc ttd tti ttn tto tts ttt