drop 4 exact location

Dropping each 4 exact positions of each side .
We have 10 numbers. 0123456789.
We subtract 2 numbers from 10 numbers so we 8 numbers.
So program will ask to type which 2 numbers will be deleted. For example 2 and 9.
So we have 8 numbers left. Therefore program will ask type in a set of 4 numbers
for example 7036 , then we have a remainder of 1458
then program will ask type another set of 4 example 5870 so the remainder is 1346
a. A B C D # A B C D
7 0 3 6 # 1 4 5 8

b. A B C D # A B C D
5 8 7 0 # 1 3 4 6
You only need two sets to predict what is coming next. I will include the actual history file .
Try to see if your algorithm predicts with history file.

Explanation:

In line one AB-70 dropped second line in as 70-CD of next one
In line one AB – 14 dropped in second line as AC -14 of next one
In line one CD-36 dropped in second line as BD-36 of next one
In line one CD-58 dropped in second line as AB-58 of next one

This is looks like a crossing or spaghetti format.

So your program will find what it will be exact position .
so you need first to have a history file of 4 sets to test it .
Therefore,
1. 7036
2. 5870
3. 4650
4. 1306
5. To find which is next , provide numbers the left side and right side .
Hint-1: no repeat will occur like 7036,5870,4650,1306 exact of these sets.
Hint-2 we have 8 numbers so we have 36 possibilities of a set four to occur , anywayy
So your program will read and calculate , as a predict model so you can read and compare.
Since we are working with 8 numbers. Your program will find which 2 numbers is crossing and in what location?
This process has two sections. One is to find random prediction, second is exact position prediction.

Please provide in visual studio 10