Knit Design 1 on needles 1 and 3 and Design 2 on needles 2 and 4 for 18 rounds. Then knit Design 2 on needles 1 and 3 and Design 1 on needles 2 and 4 for 18 rounds. Design 1: Start with 3 Knit Rounds, then Repeat (2 Purl Rounds, 3 Knit Rounds) Design 2: