Pattern help

Hi I am knitting a sweater and confused with the following instruction please help. inc 1 st at each end of 5th and every foll 8th row to 35 sts working inc sts in patt. inc 1 st at each end of every foll 10th row to 39 sts.

Do I inc on 5th row then 3 rows after being the 8th row or 8 rows after the 5th being the 13th row. Then when I have reached 35 sts do I count every 10 rows after that to inc.

Thanks:??

Inc on the 5th row, then every 8th row after that. So it would be 5, 13, 21, etc. When you have 35 sts, it’s the 10th row after the previous inc.

Thank you very much for your help. I may finish my son’s sweater before he is born ( 10th March ) now.:knitting: