-ic a-a a-b a-c a-i aaa aab aac aad aae aaf aai aan ab- aba abb abc abd abe abf abi abn ac- aca acb acc acd ace acf aci acn ad- ada adb adc add ade adf adi adn aea aeb aec aed aee aef aei aen af- afa afb afc afd afe aff afi afn ai- aia aib aic aid aie aif aii ain an- ana anb anc and ane anf ani ann baa bab bac bad bae baf bai ban bba bbb bbc bbd bbe bbf bbi bbn bca bcb bcc bcd bce bcf bci bcn bda bdb bdc bdd bde bdf bdi be- bea beb bec bed bee bef bei ben bfa bfb bfc bfd bfe bff bfi bfn bi- bia bib bic bid bie bif bii bin bna bnb bnc bnd bne bnf bni bnn c-- caa cab cac cad cae caf cai can cba cbb cbc cbd cbe cbf cbi cbn cca ccb ccc ccd cce ccf cci ccn cda cdb cdc cdd cde cdf cdi cdn ce- cea ceb cec ced cee cef cei cen cfa cfb cfc cfd cfe cff cfi cfn ci- cia cib cic cid cie cif cii cin cn- cna cnb cnc cnd cne cnf cni cnn daa dab dac dad dae daf dai dan dba dbb dbc dbd dbe dbf dbi dbn dca dcb dcc dcd dce dcf dci dcn dda ddb ddc ddd dde ddf ddi ddn de- dea deb dec ded dee def dei den dfa dfb dfc dfd dfe dff dfi dfn di- dia dib dic did die dif dii din dna dnb dnc dnd dne dnf dni dnn eaa eab eac ead eae eaf eai ean eba ebb ebc ebd ebe ebf ebi ebn ec- eca ecb ecc ecd ece ecf eci ecn ed- eda edb edc edd ede edf edi edn eea eeb eec eed eee eef een ef- efa efb efc efd efe eff efi eia eib eic eid eie eif eii ein en- ena enb enc end ene enf eni enn faa fab fac fad fae faf fai fan fba fbb fbc fbd fbe fbf fbi fbn fca fcb fcc fcd fce fcf fci fcn fda fdb fdc fdd fde fdf fdi fdn fea feb fec fed fee fef fei fen ffa ffc ffd ffe fff ffi ffn fia fib fic fid fie fif fii fin fna fnb fnc fnd fne fnf fni fnn i-d i-f ia- iaa iab iac iad iae iaf iai ian iba ibb ibc ibd ibe ibf ibi ibn ica icb icc icd ice icf ici icn ida idb idc idd ide idf idi idn ie- iea iec ied iee ief iei ien ifa ifb ifc ifd ife iff ifi ifn iia iib iic iid iie iif iii iin in- ina inb inc ind ine inf ini inn n-i naa nab nac nad nae naf nai nan nba nbb nbc nbd nbe nbf nbi nbn nca ncb ncc ncd nce ncf nci ncn nda ndb ndc ndd nde ndf ndi ndn ne- nea neb nec ned nee nef nei nen nfa nfb nfc nfd nfe nff nfi nfn nia nib nic nid nie nif nii nin nna nnb nnc nne nnf nni nnn