-ic bbb bbc bbd bbe bbi bbm bbo bbs bcb bcc bcd bce bci bcm bco bcs bdb bdc bdd bde bdi bdm bdo bds be- beb bec bed bee bei bem beo bes bi- bib bic bid bie bii bim bio bis bmb bmc bmd bme bmi bmm bmo bms bob boc bod boe boi bom boo bos bsb bsc bsd bse bsi bsm bso bss c-- cbb cbc cbd cbe cbi cbm cbo cbs ccb ccc ccd cce cci ccm cco ccs cdb cdc cdd cde cdi cdm cdo cds ce- ceb cec ced cee cei cem ceo ces ci- cib cic cid cie cii cim cio cis cmb cmc cmd cme cmi cmm cmo cms co- cob coc cod coe coi com coo cos csb csc csd cse csi csm cso css dbb dbc dbd dbe dbi dbm dbo dbs dcb dcc dcd dce dci dcm dco dcs ddb ddc ddd dde ddi ddm ddo dds de- deb dec ded dee dei dem deo des di- dib dic did die dii dim dio dis dmb dmc dmd dme dmi dmm dmo dms dob doc dod doe doi dom doo dos dsb dsc dsd dse dsi dsm dso dss ebb ebc ebd ebe ebi ebm ebo ebs ec- ecb ecc ecd ece eci ecm eco ecs ed- edb edc edd ede edi edm edo eds eeb eec eed eee eem eeo ees eib eic eid eie eii eim eio eis em- emb emc emd eme emi emm emo ems eo- eob eoc eod eoe eoi eom eoo eos es- esb esc esd ese esi esm eso ess i-d ibb ibc ibd ibe ibi ibm ibo ibs icb icc icd ice ici icm ico ics idb idc idd ide idi idm ido ids ie- iec ied iee iei iem ies iib iic iid iie iii iim iio iis im- imb imc imd ime imi imm imo ims io- iob ioc iod ioe ioi iom ioo ios is- isb isc isd ise isi ism iso iss m-o mbb mbc mbd mbe mbi mbm mbo mbs mc- mcb mcc mcd mce mci mcm mco mcs mdb mdc mdd mde mdi mdm mdo mds meb mec med mee mei mem meo mes mi- mib mic mid mie mii mim mio mis mmb mmc mmd mme mmi mmm mmo mms mob moc mod moe moi mom moo mos msb msc msd mse msi msm mso mss o-i ob- obb obc obd obe obi obm obo obs oc- ocb occ ocd oci ocm oco ocs odb odc odd ode odi odm odo ods oeb oec oed oee oei oem oeo oes oib oic oid oie oii oim oio ois om- omb omc omd ome omi omm omo oms oo- oob ooc ood ooi oom ooo oos os- osb osc osd ose osi osm oso oss sbb sbc sbd sbe sbi sbm sbo sbs scb scc scd sce sci scm sco scs sdb sdc sdd sde sdi sdm sdo sds se- seb sec sed see sei sem seo ses sib sic sid sie sii sim sio sis smb smc smd sme smi smm smo sms sob soc sod soe soi som soo sos ss- ssb ssc ssd sse ssi ssm sso sss