With yarn B cast on 4 sts:
Row 1: k 2, p 2.
Row 2: sl st 1, k 1, yo, k 2.
Row 3: k 3, bring yarn to the front, sl st 1, p 1.
Row 4: sl st 1, k 1, yo, k 3.
With yarn E work next 6 rows:
Row 5: k the first st using both yarns (B and E), k 3, bring yarn to the front, sl st 1, p 1.
Row 6: sl st 1, k 1, yo, k 2, k2tog.
Row 7: k the first st using both yarns, k 3, bring yarn to the front, sl st 1, p 1.
Row 8: sl st 1, k 1, yo, k 4.
Row 9: k the first st using both yarns, k 4, bring yarn to the front, sl st 1, p 1.
Row 10: sl st 1, k 1, yo, k 3, k2tog.
With yarn B, work next 6 rows:
Row 11: k the first st using both yarns, k 4, bring yarn to the front, sl st 1, p 1.
Row 12: sl st 1, k 1, yo, k 5.
Row 13: k the first st using both yarns, k 5, bring yarn to the front, sl st 1, p 1.
Row 14: sl st 1, k 1, yo, k 4, k2tog.
Row 15: k the first st using both yarns, k 5, bring yarn to the front, sl st 1, p 1.
Row 16: sl st 1, k 1, yo, k 6.
General pattern:
With yarn E, work the next six rows:
Row 1: k the first st using both yarns, k to last 2 sts, bring yarn to the front, sl st 1, p 1.
Row 2: sl st 1, k 1, yo, k to last 2 sts, k2tog.
Row 3: k the first st using both yarns, k to last 2 sts, bring yarn to the front, sl st 1, p 1.
Row 4: sl st 1, k 1, yo, k to end.
Row 5: k the first st using both yarns, k to last 2 sts, bring yarn to the front, sl st 1, p 1.
Row 6: sl st 1, k 1, yo, k to last 2 sts, k2tog.
With yarn B, work the next six rows:
Row 1: k the first st using both yarns, k to last 2 sts, bring yarn to the front, sl st 1, p 1.
Row 2: sl st 1, k 1, yo, k to end.
Row 3: k the first st using both yarns, k to last 2 sts, bring yarn to the front, sl st 1, p 1.
Row 4: sl st 1, k 1, yo, k to last 2 sts, k2tog.
Row 5: k the first st using both yarns, k to last 2 sts, bring yarn to the front, sl st 1, p 1.
Row 6: sl st 1, k 1, yo, k to end.
Repeat the general pattern until the end of yarn. Bind off all sts. Weave in loose ends.
Note:
Before you run out of yarn, keep in mind the number of rows for the last stripe, plus make sure you have enough yarn to bind off the shawl. My last 2 stripes were actually of 4 rows, because I've noticed my yarn was not enough.