4. Like 3d row, with blue.
5, 6. Like 3d row, with white.
7. With blue, a double in each stitch.
8. With white, chain 3, a treble in each double, join.
9. With blue, make 1 double in 1st stitch, chain 3, 1 double in same stitch, miss 1; repeat. Fasten off neatly.
For the foot:
1. With blue make a double in each stitch all around bottom of leg and instep.
2. A double in each double, taking up both veins of stitch to avoid a rib.
3, 4. Same as 2d row, with white.
5, 6. Same as 2d row, with blue.