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