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1
i | X 0 | X 1 | X 2 | X 1 X 2 | Y | S | |
+1 | 1 | 1 | +1 | Y 11, Y 12, , Y 1 m | S 1 | ||
+1 | +1 | 1 | 1 | Y 21, Y 22, , Y 2 m | S 2 | ||
+1 | 1 | +1 | 1 | Y 31, Y 32, , Y 3 m | S 3 | ||
+1 | +1 | +1 | +1 | Y 41, Y 42, , Y 4 m | S 4 |
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