Main article.
If we combine 500 letters, we can construct five new groups of 100 letters each: the first - from the first and sixth column, the second - from the second and the seventh, and so on.
The number of vowels in these new groups of 100, obviously, is made up from the following sums:
which consist of the corresponding five summands.
The results of our counts are entered in forty small tables, each containing the
following: in the first row - five numbers (1,6) and their sum, in the second row - five
numbers (2,7) and their sum, etc., in the last row - the number of vowels in the first
hundred, second hundred, etc., and finally the number of vowels in all five hundreds;
to save space, reduced by 200.
First, we shall look at the group of numbers:
In the first row are all the numbers that occur in the group, and in the second row beneath it, how often they appear.