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