Your goal is to find the secret four-color code. The following colors are possible: brown, pink, yellow, blue, green, 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', 'yellow', 'brown', 'red']. Hint: two colors are in the correct positions and one color is in the secret code but in the wrong positions.
Guess: ['brown', 'brown', 'blue', 'red']. Hint: two colors are in the secret code but in the wrong positions.
Guess: ['pink', 'blue', 'yellow', 'green']. Hint: two colors are in the correct positions.
A B C D
pink, red, yellow, yellow yellow, brown, green, blue yellow, blue, brown, yellow pink, red, brown, green