I am knitting my first sweater. The front is done in stockinette stitch from bottom to top until the pattern reaches the neck shaping. The neck shaping is like the inside of a horse shoe. Row one of the shaping states K44, slip 20 stitches just worked onto st holder, knit across 24 on each side. My question is: what stitches have I just worked onto a stitch holder? I haven't done that yet. There is no stitch holder from the previous row. The previous row, ending in purl is 68 stitches, so the first row of the neck shaping is k44, slip 20, knit across 24 which doesn't add up. Where am I confused? Please help.