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