Como hacer las rayas verticales para playera de futbol amigurumis Petus

Rnd 21: 5 sc, 1 dec, 2 sc, 1 dec, 7 sc, 1 dec, 3 sc, 1 dec, 6 sc, 1 dec, 7 sc, 1 dec = 38 sc Rnds 22 and 23: 38 sc Rnd 24: 1 sc, 1 dec, 5 sc, 1 dec, 9 sc, 1 dec, 9 sc, 1 dec, 5 sc = 34 sc Rnd 25: 10 sc, 1 dec, 8 sc, 1 dec, 8 sc, 1 dec, 1 sc = 30 sc Rnd 26: Change collar color, work 30 sc Rnd 27: 28 hdc in the outer chain Rnd: 28 hdc Leave 2 stitches unworked in the center of the collar