Your goal is to find the secret four-color code. The following colors are possible: pink, green, blue, yellow, brown, red.
Some guesses have already been made. I will provide feedback for each guess made with which it is possible to unambigiously determine the secret code.

Previous Guesses:
Guess: ['pink', 'green', 'brown', 'blue']. Hint: two colors are in the correct positions.
Guess: ['pink', 'pink', 'green', 'green']. Hint: one color is in the correct position and one color is in the secret code but in the wrong position.
Guess: ['pink', 'blue', 'blue', 'yellow']. Hint: two colors are in the correct positions.
Guess: ['pink', 'green', 'yellow', 'yellow']. Hint: three colors are in the correct positions.
A B C D
red, pink, green, red pink, brown, red, pink pink, green, red, yellow red, blue, red, blue