-  Step 3: Assemble Block B Now that your four-patch units are complete, it’s time to combine them to create Block B. Each Block B uses 4 four-patch units. PDF Instructions 1. Lay Out Your Units Place the four four-patch units on your design surface in a 2 × 2 grid. Rotate the units so the dark green squares form a diagonal line running from the upper right to the lower left of

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