The designer of this FontStruction has chosen not to make it available for download from this websitechoosing an “All Rights Reserved" license. Please respect their decision and desist from requesting license changes in the comments. If you would like to use the FontStruction for a specific project, you may be able to contact thedesigner directly about obtaining a license. Permutation: The act of changing the arrangement of a given number of elements. One font, two different brick combinations. Picking any two bricks from the 169 available gives a total possible combinations of 14196 (169C2) different fonts. Counting a certain kinds of bricks as one--all four 45degree, for instance--gives 36 unique bricks, resulting in 630 (36C2) unique combinations or fonts. In this font, if the bricks are swapped with each other, the result will be a different font. Hence order of the bricks matter. In which case, nCr (combinations) is not the right choice. What's needed is nPr (permutations). 169P2 gives 28392 permutations and a 36P2 gives 1260 permutations. So, at a minimum, 1260 fonts are possible with the current implementation of FontStruct, with just this particular layout of bricks.