-ic a-a a-c a-i aaa aac aad aai aas ac- aca acc acd aci acs ad- ada adc add adi ads ai- aia aic aid aii ais as- asa asc asd asi ass c-- caa cac cad cai cas cca ccc ccd cci ccs cda cdc cdd cdi cds ci- cia cic cid cii cis csa csc csd csi css daa dac dad dai das dca dcc dcd dci dcs dda ddc ddd ddi dds di- dia dic did dii dis dsa dsc dsd dsi dss i-d ia- iaa iac iad iai ias ica icc icd ici ics ida idc idd idi ids iia iic iid iii iis is- isa isc isd isi iss saa sac sad sai sas sca scc scd sci scs sda sdc sdd sdi sds sia sic sid sii sis ss- ssa ssc ssd ssi sss