a-a a-b a-i aaa aab aae aah aai aan ab- aba abb abe abh abi abn aea aeb aee aeh aei aen aha ahb ahe ahh ahi ahn ai- aia aib aie aih aii ain an- ana anb ane anh ani ann baa bab bae bah bai ban bba bbb bbe bbh bbi bbn be- bea beb bee beh bei ben bha bhb bhe bhh bhi bi- bia bib bie bih bii bin bna bnb bne bni bnn eaa eab eae eah eai ean eba ebb ebe ebh ebi ebn eea eeb eee een eha ehb ehe ehh ehi ehn eia eib eie eii ein en- ena enb ene enh eni enn h-i haa hab hae hah hai han hba hbb hbe hbh hbi hbn he- hea heb hee heh hei hen hha hhb hhe hhh hhi hhn hia hib hie hih hii hin hna hnb hne hnh hnn ia- iaa iab iae iah iai ian iba ibb ibe ibh ibi ibn ie- iea iee iei ien iha ihb ihe ihh ihi ihn iia iib iie iih iii iin in- ina inb ine inh ini inn n-i naa nab nae nah nai nan nba nbb nbe nbi nbn ne- nea neb nee neh nei nen nha nhb nhe nhh nhi nhn nia nib nie nih nii nin nna nnb nne nnh nni nnn