Ankle socks worked toe up
Be sure to try on sock as you go, for proper fitting, which can be done easily since these are a toe up sock.
These can also be knit to regular sock length by repeating the pattern , chartA, for about 3 times ending with round 16 on the 4th repeat. Just note I am guessing at the amount of repeats for the regular sock length since I wrote these to be ankle length.
Went to knit these again and noticed I made a mistake in the pattern Obviously you can’t get to 64 sts by decreasing from 12 . I have uploaded the corrected version.