Question with Rowan's Bolberry pattern

I’m new to the forum, and was wondering if I could receive some help with a pattern I’m working on. There are four rows that make up the basic pattern and I understand those, it’s this next section that is confusing me.

The pattern says:
Working all increases as set by last row, increase 1 stitch at each end of 6 following 4th rows, then on 9 following alternate rows, working increase stitches in pattern.

Can someone explain this in layman’s terms?

Thanks!

Welcome!
These kind of directions are always confusing. Writing them out helps. If you call the row you’re one now row 1, then increase at each end of rows 5,9,13,17,21, and 25. Then increase on rows 27,29,31,33,35,37,39,41,43.
The idea is that when you have enough sts to incorporate into the pattern at the beginning and at the end of the row, you’ll do so. Usually, working the sts in stockinette until then works fine.
Maybe this pattern?

Great that was one of the ways I was reading it, so that definitely helps.

The other way I was reading it was:
On row 1, increase on the 6th, 12th, 18th, etc stitches.
Repeat for row 5
Then on every 9th stitch, alternating rows.

Thanks again for clearing it up!