I’m working on some arm cosies from the free pattern by Lionbrand Yarn. [color=red]My question[/color] is about the directions after the first 10 given rows. The pattern is:

RIGHT COSY

Cast on 61 sts.

Foundation Row (WS): K1, p2, (k2, p2) 8 times, k1, p2, k3, p2, k1, (p2, k2) 4 times, k1.

Row 1: P1, (p2, k2) 4 times, p1, 2LT, p1, 2RT, p1, k2, (p2, k2) 8 times, p1.

Rows 2, 4, 6, 8 and 10: K the k sts and p the p sts.

Row 3: P1, (p2, k2) 4 times, p2, CR, p2, k2, (p2, k2) 8 times, p1.

Row 5: P1, (p2, k2) 4 times, p1, 2RT, p1, 2LT, p1, k2, (p2, k2) 8 times, p1.

Rows 7 and 9: P1, (p2, k2) 4 times, p1, k2, p3, k2, p1, k2, (p2, k2) 8 times, p1.

Rep Rows 1-10 until piece measures 2 in. [5 cm] from beg. [color=red]Continue in established pattern and, at the same time, dec 1 st at each side every 6th row 12 times – 37 sts.[/color] Work even until piece measures 15½ in. [39.5 cm] from beg, end with a WS row.

[color=red]What does that mean? How should I decrease?[/color]

Thanks in advance for all your help!