159082

12, 19, 26, 33, 40

Solution(word form) :
First we have to get the first number (12) and then you find a number that can add to the first number to make the second number (19). Table = 7
Then you have to add the first number (12) with itself and then minus a number (5) to make the second number (19). Shifted by:5
You have to remember that when you add to get your answer shifted by you have to write: down. When you minus to get your answer shifted by, you have to write: up.
Solution (number form)
12+7= 19
12+12= 24-5= 19
Table: 7
shifted by(up) : 5