-ic b-p bbb bbc bbd bbe bbi bbp bcb bcc bcd bce bci bcp bdb bdc bdd bde bdi bdp be- beb bec bed bee bei bep bi- bib bic bid bie bii bip bpb bpc bpd bpe bpi bpp c-- cbb cbc cbd cbe cbi cbp ccb ccc ccd cce cci ccp cdb cdc cdd cde cdi cdp ce- ceb cec ced cee cei cep ci- cib cic cid cie cii cip cpb cpc cpd cpe cpi cpp dbb dbc dbd dbe dbi dbp dcb dcc dcd dce dci dcp ddb ddc ddd dde ddi ddp de- deb dec ded dee dei dep di- dib dic did die dii dip dpb dpc dpd dpe dpi dpp ebb ebc ebd ebe ebi ebp ec- ecb ecc ecd ece eci ed- edb edc edd ede edi edp eeb eec eed eee eep eib eic eid eie eii eip ep- epb epc epd epe epi epp i-d ibb ibc ibd ibe ibi ibp icb icc icd ice ici icp idb idc idd ide idi idp ie- iec ied iee iei iep iib iic iid iie iii iip ipb ipc ipd ipe ipi ipp p-p pbb pbc pbd pbe pbi pbp pcb pcc pcd pce pci pcp pdb pdc pdd pde pdi pdp peb pec ped pee pei pep pib pic pid pie pii pip ppb ppc ppd ppe ppi ppp