K3tog worked as follows: sl1 as if to purl; on LN, lift the 2d st over 1st; return slipped st to LN and k2tog. The result is close to a central double decrease. To avoid eyelets yo sts are omitted on the decrease row. The regular stitch count is restored several rows later, with only one yo needed to accomplish that. This creates a decorative base for the pattern repeat. If preferred, yo sts may be placed directly before and after the decrease, but different instructions would obviously be needed to complete that pattern.