-ic a-a a-b a-c a-i aaa aab aac aad aae aai aap ab- aba abb abc abd abe abi abp ac- aca acb acc acd ace aci acp ad- ada adb adc add ade adi adp aea aeb aec aed aee aei aep ai- aia aib aic aid aie aii aip ap- apa apb apc apd ape api app b-p baa bab bac bad bae bai bap bba bbb bbc bbd bbe bbi bbp bca bcb bcc bcd bce bci bcp bda bdb bdc bdd bde bdi bdp be- bea beb bec bed bee bei bep bi- bia bib bic bid bie bii bip bpa bpb bpc bpd bpe bpi bpp c-- caa cab cac cad cae cai cap cba cbb cbc cbd cbe cbi cbp cca ccb ccc ccd cce cci ccp cda cdb cdc cdd cde cdi cdp ce- cea ceb cec ced cee cei cep ci- cia cib cic cid cie cii cip cpa cpb cpc cpd cpe cpi cpp daa dab dac dad dae dai dap dba dbb dbc dbd dbe dbi dbp dca dcb dcc dcd dce dci dcp dda ddb ddc ddd dde ddi ddp de- dea deb dec ded dee dei dep di- dia dib dic did die dii dip dpa dpb dpc dpd dpe dpi dpp eaa eab eac ead eae eai eap eba ebb ebc ebd ebe ebi ebp ec- eca ecb ecc ecd ece eci ed- eda edb edc edd ede edi edp eea eeb eec eed eee eep eia eib eic eid eie eii eip ep- epa epb epc epd epe epi epp i-d ia- iaa iab iac iad iae iai iap iba ibb ibc ibd ibe ibi ibp ica icb icc icd ice ici icp ida idb idc idd ide idi idp ie- iea iec ied iee iei iep iia iib iic iid iie iii iip ipa ipb ipc ipd ipe ipi ipp p-p paa pab pac pad pae pai pap pba pbb pbc pbd pbe pbi pbp pca pcb pcc pcd pce pci pcp pda pdb pdc pdd pde pdi pdp pea peb pec ped pee pei pep pia pib pic pid pie pii pip ppa ppb ppc ppd ppe ppi ppp