-ic a-a a-b a-c a-i a-z aaa aab aac aad aae aai aap aaz ab- aba abb abc abd abe abi abp abz ac- aca acb acc acd ace aci acp acz ad- ada adb adc add ade adi adp adz aea aeb aec aed aee aei aep aez ai- aia aib aic aid aie aii aip aiz ap- apa apb apc apd ape api app az- aza azb azd aze azi azp azz b-p baa bab bac bad bae bai bap baz bba bbb bbc bbd bbe bbi bbp bca bcb bcc bcd bce bci bcp bcz bda bdb bdc bdd bde bdi bdp bdz be- bea beb bec bed bee bei bep bez bi- bia bib bic bid bie bii bip biz bpa bpb bpc bpd bpe bpi bpp bza bzd bze bzp bzz c-- caa cab cac cad cae cai cap caz cba cbb cbc cbd cbe cbi cbp cbz cca ccb ccc ccd cce cci ccp ccz cda cdb cdc cdd cde cdi cdp cdz ce- cea ceb cec ced cee cei cep cez ci- cia cib cic cid cie cii cip cpa cpb cpc cpd cpe cpi cpp cpz cz- czc czd cze daa dab dac dad dae dai dap daz dba dbb dbc dbd dbe dbi dbp dbz dca dcb dcc dcd dce dci dcp dda ddb ddc ddd dde ddi ddp ddz de- dea deb dec ded dee dei dep dez di- dia dib dic did die dii dip diz dpa dpb dpc dpd dpe dpi dpp dpz dza dzb dzd dze dzi dzp eaa eab eac ead eae eai eap eaz 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 epz eze ezz i-d ia- iaa iab iac iad iae iai iap iaz iba ibb ibc ibd ibe ibi ibp ibz ica icb icc icd ice ici icp icz 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 iza ize izi izz p-p paa pab pac pad pae pai pap paz pba pbb pbc pbd pbe pbi pbp pbz pca pcb pcc pcd pce pci pcp pda pdb pdc pdd pde pdi pdp pdz pea peb pec ped pee pei pep pez pia pib pic pid pie pii pip piz ppa ppb ppc ppd ppe ppi ppp ppz pzc pzp zaa zab zac zad zai zap zaz zbb zbc zce zea zeb zec zed zee zep zez zia zib zid zie zip ziz zpc zpe zpi zpp zzz