-ic c-- ccc ccd cce cci ccs cct cdc cdd cde cdi cds cdt ce- cec ced cee cei ces cet ci- cic cid cie cii cis cit csc csd cse csi css cst ctc ctd cte cti cts ctt dcc dcd dce dci dcs dct ddc ddd dde ddi dds ddt de- dec ded dee dei des det di- dic did die dii dis dit dsc dsd dse dsi dss dst dtc dtd dte dti dts dtt ec- ecc ecd ece eci ecs ect ed- edc edd ede edi eds edt eec eed eee ees eet eic eid eie eii eis eit es- esc esd ese esi ess est etc etd ete eti ets ett i-d icc icd ice ici ics ict idc idd ide idi ids idt ie- iec ied iee iei ies iet iic iid iie iii iis iit is- isc isd ise isi iss ist itc itd ite iti its itt scc scd sce sci scs sct sdc sdd sde sdi sds sdt se- sec sed see sei ses set sic sid sie sii sis sit ss- ssc ssd sse ssi sss sst stc std ste sti sts stt tcc tcd tce tci tcs tct tdc tdd tde tdi tds tdt te- tec ted tee tei tes tet tic tid tie tii tis tit tsc tsd tse tsi tss tst ttc ttd tte tti tts ttt