I'm confused!

[sissyv]

Hi, I have been knitting a sweater and counting my stitches religiously. I'll show instructions and maybe someone can show me what I did wrong-(have have fewer stitches than I am supposed to)

beginning with 70 stitches
(RS)k2,k2tog knit to last 4 and sl 1 k1 psso k2
next row p2 p2togtbl, purl to last 4 p2tog, p2

Repeat last 2 rows 1 time more
The pattern says that I should now have 66 stitches but I have only 62- what did I do wrong? and how do I correct this?
Thanks
sis