For Exercise 33, describe all possible configurations of lights that can be obtained, st...

For Exercise 33, describe all possible configurations of lights that can be obtained, starting with all the lights off.

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Suppose the lights in Example 2.35 can be off, light blue, or dark blue and the switches work as described in Example 2.36. (That is, the switches control the same lights as in Example 2.35 but cycle through the colors as in Example 2.36.) Show that it is possible to start with all of the lights off and push the switches in some order so that the lights are dark blue, light blue, dark blue, light blue, and dark blue, in that order.

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