None of them actually connect on the bottom. Not the threes not the fours.
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2 ups, 4y,
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Three but they made it look like four on the bottom
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1 up, 4y
no 4
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1 up, 4y
both
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1 up, 4y
4
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1 up, 4y
4
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1 up, 4y
Optical Illusion: An optical illusion (also called a visual illusion) is an illusion caused by the visual system and characterized by a visual percept that arguably appears to differ from reality.