Erika knight project 12

Pattern reads: Next row: Patt 5[7:9], inc in next st, patt 15, inc in next st, patt 15, inc in next st, patt 5[7:9]. 46[50:54] sts.

There is no previous mention of “patt” in the pattern. The cable pattern is written as:C6F: slip next 3 sts onto CN and hold at front of work, k3, then k3 from CN.C6B: slip next 3 sts onto CN and hold at back of work, k3, then k3 from CN.C12F: slip next 6 sts onto CN and hold at front of work, k6, then k6 from CN.C12B: slip next 6 sts onto CN and hold at back of work, k6, then k6 from CN. But nothing about “patt15”

Welcome to the forum.
Patt is an abbreviation of pattern and means to work in pattern for the number of stitches listed.