Letters like e, a, o, B, D, or numbers like 4, 6, 8, 9, 0 are characterized by the fact that they enclose areas. In this way, words can be coded to numbers.

For example, the sentence

“pappa loves doing mystery-solving always on his own. But mom starts arguing about it.“

following numbers:

5 2 3 3 2 1 0 1 2 1 1 3 3 0