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