-ic bbb bbc bbd bbe bbi bbm bbo bbs bbt bcb bcc bcd bce bci bcm bco bcs bct bdb bdc bdd bde bdi bdm bdo bds bdt be- beb bec bed bee bei bem beo bes bet bi- bib bic bid bie bii bim bio bis bit bmb bmc bmd bme bmi bmm bmo bms bmt bob boc bod boe boi bom boo bos bot bsb bsc bsd bse bsi bsm bso bss bst btb btc btd bte bti btm bto bts btt c-- cbb cbc cbd cbe cbi cbm cbo cbs cbt ccb ccc ccd cce cci ccm cco ccs cct cdb cdc cdd cde cdi cdm cdo cds cdt ce- ceb cec ced cee cei cem ceo ces cet ci- cib cic cid cie cii cim cio cis cit cmb cmc cmd cme cmi cmm cmo cms cmt co- cob coc cod coe coi com coo cos cot csb csc csd cse csi csm cso css cst ctb ctc ctd cte cti ctm cto cts ctt dbb dbc dbd dbe dbi dbm dbo dbs dbt dcb dcc dcd dce dci dcm dco dcs dct ddb ddc ddd dde ddi ddm ddo dds ddt de- deb dec ded dee dei dem deo des det di- dib dic did die dii dim dio dis dit dmb dmc dmd dme dmi dmm dmo dms dmt dob doc dod doe doi dom doo dos dot dsb dsc dsd dse dsi dsm dso dss dst dtb dtc dtd dte dti dtm dto dts dtt ebb ebc ebd ebe ebi ebm ebo ebs ebt ec- ecb ecc ecd ece eci ecm eco ecs ect ed- edb edc edd ede edi edm edo eds edt eeb eec eed eee eem eeo ees eet eib eic eid eie eii eim eio eis eit em- emb emc emd eme emi emm emo ems emt eo- eob eoc eod eoe eoi eom eoo eos eot es- esb esc esd ese esi esm eso ess est etb etc etd ete eti etm eto ets ett i-d ibb ibc ibd ibe ibi ibm ibo ibs ibt icb icc icd ice ici icm ico ics ict idb idc idd ide idi idm ido ids idt ie- iec ied iee iei iem ies iet iib iic iid iie iii iim iio iis iit im- imb imc imd ime imi imm imo ims imt io- iob ioc iod ioe ioi iom ioo ios iot is- isb isc isd ise isi ism iso iss ist itb itc itd ite iti itm ito its itt m-o mbb mbc mbd mbe mbi mbm mbo mbs mbt mc- mcb mcc mcd mce mci mcm mco mcs mct mdb mdc mdd mde mdi mdm mdo mds mdt meb mec med mee mei mem meo mes met mi- mib mic mid mie mii mim mio mis mit mmb mmc mmd mme mmi mmm mmo mms mmt mob moc mod moe moi mom moo mos mot msb msc msd mse msi msm mso mss mst mtb mtc mtd mte mti mtm mto mts mtt o-i ob- obb obc obd obe obi obm obo obs obt oc- ocb occ ocd oci ocm oco ocs oct odb odc odd ode odi odm odo ods odt oeb oec oed oee oei oem oeo oes oet oib oic oid oie oii oim oio ois oit om- omb omc omd ome omi omm omo oms omt oo- oob ooc ood ooi oom ooo oos oot os- osb osc osd ose osi osm oso oss ost ot- otb otc otd ote oti otm oto ots ott sbb sbc sbd sbe sbi sbm sbo sbs sbt scb scc scd sce sci scm sco scs sct sdb sdc sdd sde sdi sdm sdo sds sdt se- seb sec sed see sei sem seo ses set sib sic sid sie sii sim sio sis sit smb smc smd sme smi smm smo sms smt sob soc sod soe soi som soo sos sot ss- ssb ssc ssd sse ssi ssm sso sss sst stb stc std ste sti stm sto sts stt tbb tbc tbd tbe tbi tbm tbo tbs tbt tcb tcc tcd tce tci tcm tco tcs tct tdb tdc tdd tde tdi tdm tdo tds tdt te- teb tec ted tee tei tem teo tes tet tib tic tid tie tii tim tio tis tit tmb tmc tmd tme tmi tmm tmo tms tmt to- tob toc tod toe toi tom too tos tot tsb tsc tsd tse tsi tsm tso tss tst ttb ttc ttd tte tti ttm tto tts ttt