On the 3rd row of the stockinette, inc at the beg and end of the row. Then do that on every 3rd row 2 more times. The increases will be on rows 3, 6, and 9. On the next row do the pattern row and inc again on the 2nd row after (do one row, then an inc row). Then go back to increasing on every 3rd row until you have 56 sts.