This pattern is very flexible as to what size you want it to be.To make it wider, add ten more stitches to add two more blocks.
The last one I made was a good baby blanket size, but I’m not sure of the measurements exactly:
Size 35 needles, or larger, depending on what’s available.
Using four strands of worsted weight yarn at one time, cast on 35 st.
Work in garter st (k every row) for 5 rows.
Pattern stitch
Row 1: k5, p5, k5, p5, k5, p5, k5
Row 2: k5, k5, p5, k5, p5, k5, p5
Rows 3, 4, 5, 6: k5, knit the knits and purl the purls as they face you, ending with k5
Row 7: k10, p5, k5, p5, k10
Row 8- k5, p5, k5, p5, k5, p5, k5
Rows 9, 10, 11, 12: k5, knit the knits and purl the purls as they face you, ending with k5
Work these two sets of rows until you are a few inches short of the length you want.
K 5 rows and bind off.