Out of each of your 3 1/2 in strips ( they should all be that wide) Cut in one inch increments. You need 36 of each color combination. There should be a little left over of each strip, ease for cutting mistakes and joins. Be sure to clean up your end before starting your cuts to make sure that they are straight.

While cutting your strips, you can easily along the way verify if you have done an accurate job, the light strips end up 1/2 inch so easy to line up on your ruler when cutting.

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[ATTACH=CONFIG]44879[/ATTACH]
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[ATTACH=CONFIG]44910[/ATTACH]