What does rep last 2 rows until foll row is completed

5th row. Patt to within 1 st of first marked st,
k2tog (marked st is second of these 2 sts),
yfwd, k10, k2tog (marked st is second of these
2 sts), yfwd, k to end.
6th row. P to first marked st, p marked st, p to
next marked st, p marked st, patt to end.
(Back should be 45.5[51:56.5:61:66.5] cm,
18[20:22¼:24:26¼] in, wide.)
Rep last 2 rows until the foll row has been
completed:
Next row. K2tog (marked st is second of th

Welcome to KH!
What is the name of your pattern and what part of the pattern are the quoted rows from?

Sweater and vest king cole pattern, it’s a pattern I download from love crafts. I am working on the back, and I don’t understand where it calls to repeat rows 5 and 6 until the foll row is completed. Does it mean work on 5 and 6 until I reach the size I am working on which is 22 1/4 inches?

Paradise beaches is the name

There are 2 slanting lines of k2tog, yo in the pattern. Each time you repeat row 5 you’ll be working one fewer stitch before the first marked stitch until the k2tog is at the row edge. That’s the row:
Next row. K2tog (marked st is second of these 2 sts – now remove this marker), yfwd, k10,
k2tog (marked st is second of these 2 sts), yfwd, k to end.

Then follow the directions after this row.