Hi,
New to crochet and trying an intermediate pattern. It's a shell pattern. Row 1 sets up the pattern. Row two is chain 3, 3 dc, ch 2, 3 dc, turn.
Then it says,
repeat row 2 until you have 50" working in multiples of three rows and two rows.
What does it mean working in multiples?! I'm very confused because I need to turn at the end of the row, so I'm not sure what this detail does to the pattern.
Thanks for any advice!

Margaret