-ic a-a a-b a-c a-i aaa aab aac aad aae aai aan aap ab- aba abb abc abd abe abi abn abp ac- aca acb acc acd ace aci acn acp ad- ada adb adc add ade adi adn adp aea aeb aec aed aee aei aen aep ai- aia aib aic aid aie aii ain aip an- ana anb anc and ane ani ann anp ap- apa apb apc apd ape api apn app b-p baa bab bac bad bae bai ban bap bba bbb bbc bbd bbe bbi bbn bbp bca bcb bcc bcd bce bci bcn bcp bda bdb bdc bdd bde bdi bdp be- bea beb bec bed bee bei ben bep bi- bia bib bic bid bie bii bin bip bna bnb bnc bnd bne bni bnn bnp bpa bpb bpc bpd bpe bpi bpn bpp c-- caa cab cac cad cae cai can cap cba cbb cbc cbd cbe cbi cbn cbp cca ccb ccc ccd cce cci ccn ccp cda cdb cdc cdd cde cdi cdn cdp ce- cea ceb cec ced cee cei cen cep ci- cia cib cic cid cie cii cin cip cn- cna cnb cnc cnd cne cni cnn cnp cpa cpb cpc cpd cpe cpi cpn cpp daa dab dac dad dae dai dan dap dba dbb dbc dbd dbe dbi dbn dbp dca dcb dcc dcd dce dci dcn dcp dda ddb ddc ddd dde ddi ddn ddp de- dea deb dec ded dee dei den dep di- dia dib dic did die dii din dip dna dnb dnc dnd dne dni dnn dnp dpa dpb dpc dpd dpe dpi dpn dpp eaa eab eac ead eae eai ean eap eba ebb ebc ebd ebe ebi ebn ebp ec- eca ecb ecc ecd ece eci ecn ed- eda edb edc edd ede edi edn edp eea eeb eec eed eee een eep eia eib eic eid eie eii ein eip en- ena enb enc end ene eni enn enp ep- epa epb epc epd epe epi epn epp i-d ia- iaa iab iac iad iae iai ian iap iba ibb ibc ibd ibe ibi ibn ibp ica icb icc icd ice ici icn icp ida idb idc idd ide idi idn idp ie- iea iec ied iee iei ien iep iia iib iic iid iie iii iin iip in- ina inb inc ind ine ini inn inp ipa ipb ipc ipd ipe ipi ipn ipp n-i naa nab nac nad nae nai nan nap nba nbb nbc nbd nbe nbi nbn nbp nca ncb ncc ncd nce nci ncn ncp nda ndb ndc ndd nde ndi ndn ndp ne- nea neb nec ned nee nei nen nep nia nib nic nid nie nii nin nip nna nnb nnc nne nni nnn nnp npa npb npc npd npe npi npn npp p-p paa pab pac pad pae pai pan pap pba pbb pbc pbd pbe pbi pbn pbp pca pcb pcc pcd pce pci pcn pcp pda pdb pdc pdd pde pdi pdn pdp pea peb pec ped pee pei pen pep pia pib pic pid pie pii pin pip pn- pna pnb pnc pnd pne pni pnn pnp ppa ppb ppc ppd ppe ppi ppn ppp