Puzzle #485 - 2x2 Masyu

On Puzzlers Club, 2x2 Masyu is a bit of a meme. One of the times it came up I decided to take it a bit less literally - what if you drew a loop of 2x2s instead?

Draw a 2-cell wide loop through some cells and all circles. A black circle must be at a point where the loop turns, the loop must continue for 2 cells in both directions. A white circle must be at a point where the loop does not turn, and the loop must turn immediately on at least one side.

These rules are a bit hard to parse from just a description, so here's an example of 2 things that are the minimal extension from a circle, and 3 things that are not okay.

The black circle on the left contains a turn and extends twice in both directions. The black circle on the top is incorrect because it does not extend two cells from the turn in either direction.

The white circle on the left is correct because it doesn't turn on the circle. The middle white circle is incorrect because it turns on the circle. The rightmost white circle is incorrect because it doesn't turn at the first opportunity on one side.

With that out of the way, here's the puzzle!

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