@na0milnn not all strings are used equally in this pattern, so they would have to have different lengths. I would recommend to cut them all one meter anyways and then just to a f or b knot between two strings of the same colour to switch the strings around, if you notice that one string is running out faster. String B would need tobe a bit longer because there is only one of those, so you can't switch it around with other strings.
Stitched
