-ic bbb bbc bbd bbe bbi bbn bbo bbs bcb bcc bcd bce bci bcn bco bcs bdb bdc bdd bde bdi bdo bds be- beb bec bed bee bei ben beo bes bi- bib bic bid bie bii bin bio bis bnb bnc bnd bne bni bnn bno bns bob boc bod boe boi bon boo bos bsb bsc bsd bse bsi bsn bso bss c-- cbb cbc cbd cbe cbi cbn cbo cbs ccb ccc ccd cce cci ccn cco ccs cdb cdc cdd cde cdi cdn cdo cds ce- ceb cec ced cee cei cen ceo ces ci- cib cic cid cie cii cin cio cis cn- cnb cnc cnd cne cni cnn cno cns co- cob coc cod coe coi con coo cos csb csc csd cse csi csn cso css dbb dbc dbd dbe dbi dbn dbo dbs dcb dcc dcd dce dci dcn dco dcs ddb ddc ddd dde ddi ddn ddo dds de- deb dec ded dee dei den deo des di- dib dic did die dii din dio dis dnb dnc dnd dne dni dnn dno dns dob doc dod doe doi don doo dos dsb dsc dsd dse dsi dsn dso dss ebb ebc ebd ebe ebi ebn ebo ebs ec- ecb ecc ecd ece eci ecn eco ecs ed- edb edc edd ede edi edn edo eds eeb eec eed eee een eeo ees eib eic eid eie eii ein eio eis en- enb enc end ene eni enn eno ens eo- eob eoc eod eoe eoi eon eoo eos es- esb esc esd ese esi esn eso ess i-d ibb ibc ibd ibe ibi ibn ibo ibs icb icc icd ice ici icn ico ics idb idc idd ide idi idn ido ids ie- iec ied iee iei ien ies iib iic iid iie iii iin iio iis in- inb inc ind ine ini inn ino ins io- iob ioc iod ioe ioi ion ioo ios is- isb isc isd ise isi isn iso iss n-i nbb nbc nbd nbe nbi nbn nbo nbs ncb ncc ncd nce nci ncn nco ncs ndb ndc ndd nde ndi ndn ndo nds ne- neb nec ned nee nei nen neo nes nib nic nid nie nii nin nio nis nnb nnc nne nni nnn nno nns no- nob noc nod noe noi non noo nos nsb nsc nsd nse nsi nsn nso nss o-i ob- obb obc obd obe obi obn obo obs oc- ocb occ ocd oci ocn oco ocs odb odc odd ode odi odn odo ods oeb oec oed oee oei oen oeo oes oib oic oid oie oii oin oio ois on- onb onc ond one oni onn ono ons oo- oob ooc ood ooi oon ooo oos os- osb osc osd ose osi osn oso oss sbb sbc sbd sbe sbi sbn sbo sbs scb scc scd sce sci scn sco scs sdb sdc sdd sde sdi sdn sdo sds se- seb sec sed see sei sen seo ses sib sic sid sie sii sin sio sis snb snc snd sne sni snn sno sns sob soc sod soe soi son soo sos ss- ssb ssc ssd sse ssi ssn sso sss