help to read pattern

Please help me to understand this:

Row 21: With new color, [ch 1, sc in next ch-1 space] 42 (43, 44, 45, 46, 47) times, ch 1, (sc, ch 1, sc) in next ch-1 space (corner made), place marker in last ch-1 made, [ch 1, sc in next ch-1 space] 5 (6, 7, 8, 9, 10) times, ch 1, (sc, ch 1, sc) in next ch-1 space (corner made), place marker in last ch-1 made, [ch 1, sc in next ch-1 space] 42 (43, 44, 45, 46, 47) times, end with ch 1, sc in last sc, turn; change to next color in Color Sequence—94 (97, 100, 103, 106, 109) sc.

This is from Doris Chan project. Before this row it says:

Shoulders
Note: Shoulders are now "grown" by making two corner increases equally spaced from center of back neck. Mark the ch-1 space at center of each corner, move markers up as work progresses.

I am challenged in this area but eager to learn.
Appreciate your help to understand it.

Thank you for your help.

Forums: 

Can you specify where you have questions about this pattern? Don't want to take up your time walking through something you already know or have already figured out.

Thank you for you help.

I understand that I do 42 times [ch 1, sc in next ch-1 space]
and place a marker in the last chain (42nd chain)
then I make another 5 times [ch 1, sc in next ch-1 space] and place a marker in the 5th chain
then I make another [ch 1, sc in next ch-1 space] for the next 42 chains.

After that my row is almost done (only few chains left)

At the end it says- change to next color in Color Sequence—94 (97, 100, 103, 106, 109) sc. - but it happens to be a new row (??)

If it suppose to start shoulders - where is it - between 5 chains in the middle(??)

Thank you again

How to understand? -
Note: Shoulders are now "grown" by making two corner increases equally spaced from center of back neck. Mark the ch-1 space at center of each corner, move markers up as work progresses.

Does it mean that I will be making shoulders from now on or they already had been "grown"?

How to understand?
ch 1, (sc, ch 1, sc) in next ch-1 space (corner made), p l a c e m a r k e r i n l a s t ch-1 made,
where is the LAST ch???

After I do what is says I don't have 94 sc left. Do I go back to make a new row???