-ic bbb bbc bbd bbe bbi bbn bbs bcb bcc bcd bce bci bcn bcs bdb bdc bdd bde bdi bds be- beb bec bed bee bei ben bes bi- bib bic bid bie bii bin bis bnb bnc bnd bne bni bnn bns bsb bsc bsd bse bsi bsn bss c-- cbb cbc cbd cbe cbi cbn cbs ccb ccc ccd cce cci ccn ccs cdb cdc cdd cde cdi cdn cds ce- ceb cec ced cee cei cen ces ci- cib cic cid cie cii cin cis cn- cnb cnc cnd cne cni cnn cns csb csc csd cse csi csn css dbb dbc dbd dbe dbi dbn dbs dcb dcc dcd dce dci dcn dcs ddb ddc ddd dde ddi ddn dds de- deb dec ded dee dei den des di- dib dic did die dii din dis dnb dnc dnd dne dni dnn dns dsb dsc dsd dse dsi dsn dss ebb ebc ebd ebe ebi ebn ebs ec- ecb ecc ecd ece eci ecn ecs ed- edb edc edd ede edi edn eds eeb eec eed eee een ees eib eic eid eie eii ein eis en- enb enc end ene eni enn ens es- esb esc esd ese esi esn ess i-d ibb ibc ibd ibe ibi ibn ibs icb icc icd ice ici icn ics idb idc idd ide idi idn ids ie- iec ied iee iei ien ies iib iic iid iie iii iin iis in- inb inc ind ine ini inn ins is- isb isc isd ise isi isn iss n-i nbb nbc nbd nbe nbi nbn nbs ncb ncc ncd nce nci ncn ncs ndb ndc ndd nde ndi ndn nds ne- neb nec ned nee nei nen nes nib nic nid nie nii nin nis nnb nnc nne nni nnn nns nsb nsc nsd nse nsi nsn nss sbb sbc sbd sbe sbi sbn sbs scb scc scd sce sci scn scs sdb sdc sdd sde sdi sdn sds se- seb sec sed see sei sen ses sib sic sid sie sii sin sis snb snc snd sne sni snn sns ss- ssb ssc ssd sse ssi ssn sss