-ic a-a a-c a-i aaa aac aai aap aas ac- aca acc aci acp acs ai- aia aic aii aip ais ap- apa apc api app aps as- asa asc asi asp ass c-- caa cac cai cap cas cca ccc cci ccp ccs ci- cia cic cii cip cis cpa cpc cpi cpp cps csa csc csi csp css ia- iaa iac iai iap ias ica icc ici icp ics iia iic iii iip iis ipa ipc ipi ipp ips is- isa isc isi isp iss p-p paa pac pai pap pas pca pcc pci pcp pcs pia pic pii pip pis ppa ppc ppi ppp pps ps- psa psc psi psp pss saa sac sai sap sas sca scc sci scp scs sia sic sii sip sis spa spc spi spp sps ss- ssa ssc ssi ssp sss