-ic a-a a-b a-c a-i aaa aab aac aae aah aai aan ab- aba abb abc abe abh abi abn ac- aca acb acc ace ach aci acn aea aeb aec aee aeh aei aen aha ahb ahc ahe ahh ahi ahn ai- aia aib aic aie aih aii ain an- ana anb anc ane anh ani ann baa bab bac bae bah bai ban bba bbb bbc bbe bbh bbi bbn bca bcb bcc bce bch bci bcn be- bea beb bec bee beh bei ben bha bhb bhc bhe bhh bhi bi- bia bib bic bie bih bii bin bna bnb bnc bne bni bnn c-- caa cab cac cae cah cai can cba cbb cbc cbe cbh cbi cbn cca ccb ccc cce cch cci ccn ce- cea ceb cec cee ceh cei cen ch- cha chb chc che chh chi chn ci- cia cib cic cie cih cii cin cn- cna cnb cnc cne cnh cni cnn eaa eab eac eae eah eai ean eba ebb ebc ebe ebh ebi ebn ec- eca ecb ecc ece ech eci ecn eea eeb eec eee een eha ehb ehc ehe ehh ehi ehn eia eib eic eie eii ein en- ena enb enc ene enh eni enn h-i haa hab hac hae hah hai han hba hbb hbc hbe hbh hbi hbn hca hcb hcc hce hch hci hcn he- hea heb hec hee heh hei hen hha hhb hhc hhe hhh hhi hhn hia hib hic hie hih hii hin hna hnb hnc hne hnh hnn ia- iaa iab iac iae iah iai ian iba ibb ibc ibe ibh ibi ibn ica icb icc ice ich ici icn ie- iea iec iee iei ien iha ihb ihc ihe ihh ihi ihn iia iib iic iie iih iii iin in- ina inb inc ine inh ini inn n-i naa nab nac nae nah nai nan nba nbb nbc nbe nbi nbn nca ncb ncc nce nch nci ncn ne- nea neb nec nee neh nei nen nha nhb nhc nhe nhh nhi nhn nia nib nic nie nih nii nin nna nnb nnc nne nnh nni nnn