
The SSSP is worked on the purl side of the work and the K3tog on the knit side of the work. When viewed from the knit side, the SSSP slants to the left, a slant opposite that of the K3tog. Both stitches are used in the Basic Toe Up Sock - Short Rows Toe.
For stitch instructions read:
SSSP
Stitch Patterns
K3tog.