-ic a-a a-c a-i aaa aac aai aar aas ac- aca acc aci acr acs ai- aia aic aii air ais ar- ara arc ari arr ars as- asa asc asi asr ass c-- caa cac cai car cas cca ccc cci ccr ccs ci- cia cic cii cir cis cra crc cri crr crs csa csc csi csr css ia- iaa iac iai iar ias ica icc ici icr ics iia iic iii iir iis ir- ira irc iri irr irs is- isa isc isi isr iss ra- raa rac rai rar ras rca rcc rci rcr rcs ria ric rii rir ris rra rrc rri rrr rrs rsa rsc rsi rsr rss saa sac sai sar sas sca scc sci scr scs sia sic sii sir sis sr- sra src sri srr srs ss- ssa ssc ssi ssr sss