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