What is the version of the following sentence with correct punctuation?

Beg mid back and work with light grey as follows K 8 sts past marker turn tighten yarn and P 16 sts back Turn tighten yarn and K 24 sts turn tighten yarn and P 32 sts back
Beg mid back and work with light grey as follows: K 8 sts past marker, turn, tighten yarn and P 16 sts back. Turn, tighten yarn and K 24 sts, turn, tighten yarn and P 32 sts back.