Out of Sorts Three

Put the numbers in their correct order by switching two at a time. Can you do it without even knowing what the numbers are? This version has just three numbers. Work your way up to 5, 8, and 16 numbers.

3 levels: open (all numbers are visible)
2 only(only 2 numbers at a time)
hidden (you can compare numbers, but you can't see them)

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