Reading each pair of numbers in a row as a 2 digit number, values increase by 6 each time.

Reading each column as a 3 digit number, moving from left to right, the columns follow the sequence of cube numbers of 5, 6 and 7.

In each star, the central value equals the sum of the upper and lower digits on each star, subtracting the sum of the left and right hand digits.

In each circle, double the numbers on the left hand side and put the result in the opposite segment on the right hand side.

Adding up the digits in each oval shape, as you move down the column this total increases by 2 each time, from 12 to 22.