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