Pattern without shorthand has me stuck

Pattern Central
1

I found a diagonally worked blanket with adorable edging. Upon attempting a trial run of the edge piece, however, I have misunderstood the first row instructions.

“Cast on 8 stitches
Row 1 ( Wrong side) Slip 1, Knit 1,(Yarn fwd knit 2 tog)twice, Yarn fwd Knit 2 (9sts)”
(bbc.co.uk/stoke/my_pages/babywear/hkp/028.shtml)

I interpret this as:
Slip 1, Knit 1, WYF Knit 2 stitches into one (decrease), WYF Knit 2 into one, Knit 1, Knit 1.

But this does not yield 9 stitches at the end.

If anyone could please present a clearer explanation, I would appreciate it. Text or standard shorthand would be excellent.

Thank you.

2

When you put the yarn in front and knit the next two together, you’re making a yarn-over increase. For every decrease you’re making with the k2tog, you’re also making an increase with the yo, so you should be even at the end.

3

Slip 1, Knit 1, WYF Knit 2 stitches into one (decrease), WYF Knit 2 into one, Knit 1, Knit 1.

You forgot a 3rd yf or YO. Sl 1 k1, YO, k2tog, YO, k2tog, YO, k2.

4

Oh, thank you so much! What an obvious thing to have missed.
>.<

Now I can finish this thing! Woot.