Use black yarn, start with the foundation chain: 20 ch
R1-2: ( use black yarn work 4 dc, change pink yarn work 4 dc) Repeat 2 times, then change black yarn work 4 dc.
R3-4: turn, (change pink yarn work 4 dc, change black yarn work 4 dc) Repeat 2 times, then change pink yarn work 4 dc.
R5-6: Repeat R1
R7-8: Repeat R3
Finally, use black yarn work sc a round. cut and weave the ends.