-ic c-- ccc ccd cce cci ccs ccv cdc cdd cde cdi cds cdv ce- cec ced cee cei ces cev ci- cic cid cie cii cis civ csc csd cse csi css csv cvc cvd cve cvi cvs cvv dcc dcd dce dci dcs dcv ddc ddd dde ddi dds de- dec ded dee dei des dev di- dic did die dii dis div dsc dsd dse dsi dss dsv dvc dvd dve dvi dvs ec- ecc ecd ece eci ecs ecv ed- edc edd ede edi eds eec eed eee ees eev eic eid eie eii eis eiv es- esc esd ese esi ess esv evc evd eve evi evs evv i-d i-v icc icd ice ici ics icv idc idd ide idi ids idv ie- iec ied iee iei ies iev iic iid iie iii iis is- isc isd ise isi iss isv ivc ivd ive ivi ivs ivv scc scd sce sci scs scv sdc sdd sde sdi sds sdv se- sec sed see sei ses sev sic sid sie sii sis siv ss- ssc ssd sse ssi sss ssv svc svd sve svi svs svv v-e vcc vcd vce vci vcs vdc vdd vde vdi vds vdv vec ved vee vei ves vi- vic vid vie vii vis viv vsc vsd vse vsi vss vsv vvc vvi vvs vvv