Your goal is to find the secret four-color code. The following colors are possible: white, black, brown, green, pink, 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: ['red', 'green', 'brown', 'pink']. Hint: three colors are in the secret code but in the wrong positions.
Guess: ['white', 'brown', 'red', 'red']. Hint: two colors are in the correct positions.
Guess: ['black', 'brown', 'red', 'green']. Hint: two colors are in the correct positions and two colors are in the secret code but in the wrong positions.
Guess: ['black', 'brown', 'green', 'red']. 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
brown, black, black, black green, brown, red, black white, white, white, red red, red, white, green