-ic a-a a-c a-i aaa aac aad aai aap ac- aca acc acd aci acp ad- ada adc add adi adp ai- aia aic aid aii aip ap- apa apc apd api app c-- caa cac cad cai cap cca ccc ccd cci ccp cda cdc cdd cdi cdp ci- cia cic cid cii cip cpa cpc cpd cpi cpp daa dac dad dai dap dca dcc dcd dci dcp dda ddc ddd ddi ddp di- dia dic did dii dip dpa dpc dpd dpi dpp i-d ia- iaa iac iad iai iap ica icc icd ici icp ida idc idd idi idp iia iic iid iii iip ipa ipc ipd ipi ipp p-p paa pac pad pai pap pca pcc pcd pci pcp pda pdc pdd pdi pdp pia pic pid pii pip ppa ppc ppd ppi ppp