Permutations of a Four Letter Word

The placement of 4 letter words in this course, my first purpose is to look at the number of 4 letter combinations (ABCD etc). It is also a purpose to examine how to change letters and form other characters. The number of combinations (ABCC, AAB, etc.) will be affected. Once you find a general formula, apply it to a more difficult situation. This is my goal. First I looked at the simplest case and tried to find general expressions that apply to all the situations I set.

In my post, I explained that my sentence was inspired by people who were able to combine 26 letters of alphabet and literary magic placement and combination. They use these for words, make sentences, ties them, and it will become a story that leads us into their world, their thoughts and experiences. I applied this feature to Anna's post and Kira's answer and proposed the next 4 x 4 grid or "lighting landscape". The ends of the two axes represent the ends of two continuums. To some extent, this solves Kira's view that "there is no creativity in the vacuum, all art and writing have a relationship between subjective self and subjective environment."

For many people, if you look at that word, you can see that there are four letters. People do not need to calculate a single letter to get a number - it seems to be an automatic function of the brain. However, for words containing alphanumeric characters, it is not easy to quickly determine the number of characters that exist. In fact, the number of characters to count must be eight "many" characters. In the case of at least a relatively small number of problems, this ability to distinguish between a series of things is called "secondaryization". Whether or not the brain disinfects it is not clear, but it is clear that this ability requires the brain to distinguish numbers, ie to recognize differences between the brains.

Each node of the language terry structure contains the word characters. You spell a word at Terry's branch one character at a time. These steps begin to branch when the order of letters differs from other words in the Terry structure, or when the word ends. Each node contains a character (data) and a Boolean value that indicates whether the node is the last node of the word. The adjacency matrix is ​​a digital grid where each row or column represents a different node in the graph. At the intersection of rows and columns, there is a number representing the relationship. Zero means no edge or relationship. A person means having a relationship. One or more numbers can be used to display different weights.