How to decrease using yfd
Copy of instructions
I am knitting a toy fairy and have arrived at the overskirt. The pattern says cast on 108 sts, 1st row - K 106, YF, sl 1, YB, turn. 2nd row - Sl1, P104, YB, sl 1, YF, turn. 3rd row - Sl 1, K102, YF, sl 1, YB, turn. Continue in this manner, decreasing the number of K or P stitches by two on each subsequent row ....
I have attached a photograph of these instructions for clarity.
I don't understand how this instruction causes a decrease? When I follow the pattern the number of stitches stays the same. Are you able to help me please?
With thanks and kind regards,