This will be a one-colour sock (can’t remember doing this in a long while, esp with flk heel (maybe should I look through my sock yarn to work a contrast colour??)

64st CO
20R 2x2 rib
Knit leg till 7.5” from CO - 70R
FLK heel - 10/12/10
Knit foot from end of heel segment till 6.3”
Toe decreases -ssk/k2tog - work 3R after the final decrease round (which is at 12st per side vs the usual 10 st per side, given shape of feet/toes)