Ying Yang (Logical Puzzles Series #9)

Ying Yang puzzle is also known by the name Black and White puzzle because cells in this puzzle are divided into two separate black and white regions. Once the puzzle is solved it looks like the Ying-Yang symbol. This is the reason this puzzle is more famous with the name Ying Yang. Moreover, there is another puzzle named the Black or White puzzle. So I will be using the name Ying Yang for these kinds of puzzles. In fact, this is the puzzle created by me long back in the year 2009 which was left unpublished for such a long time. There are many such puzzles created years back and which remained on paper and I was not able to publish these puzzles. Now soon I will be publishing all these puzzles one by one.
This Ying Yang puzzle I am publishing as the 9th puzzle in the Logical Puzzles Series. Can you solve this Ying-Yang puzzle?

Example of Ying Yang puzzle

Rules of Ying Yang puzzle

Fill each empty cell with either a black circle or a white circle. All white circles should form a single interconnected area and similarly, all black circles should form a single interconnected area. There cannot exist any 2x2 cell region consisting of the same color circles anywhere in the grid.
Ying Yang (Logical Puzzles Series #9)
Ying Yang (Logical Puzzles Series #9)

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