Materials:
4mm needles
2 stitch markers
Yarn A: 376 yards (344 m) of variegated fingering yarn
Yarns B: 376 yards (344 m) of solid fingering yarn
Yarn C: about 189 yards (170 m) of solid fingering yarn

Many thanks to Jessica for her help :)

A mistake was found with the typing:
it said cast on 16 stitches instead of 18

and in a row 1: k2, yo, k4, yo, pm, k1, pm, yo, k4, yo, pm, k1, pm, yo, k4, yo, k2

Thank you so much for your help ♥♥