Crochet - Rnd 5: Dc in each st across to next marked st with 2 dc in 2nd dc of each inc, drop lp?

... from hook, move marker below to dropped lp, place next color on hook, dc in each st across to next marker with 2 dc in 2nd st of each inc, move m

... from hook, move marker below to dropped lp, place next color on hook, dc in each st across to next marker with 2 dc in 2nd st of each inc, move marker below to lp on hook. (30 sts of each color)
please can someone explain what I have to do here as I am very confused ... it is for a spiral blanket ... should I be using 2 or 4 strands

or:... from hook, move marker below to dropped lp, place next color on hook, dc in each st across to next marker with 2 dc in 2nd st of each inc, move marker below to lp on hook. (30 sts of each color)please can someone explain what I have to do here as I am very confused ... it is for a spiral blanket ... should I be using 2 or 4 strands

Tags:place,marker,2nd,crochet,