Your goal is to find the secret four-color code. The following colors are possible: purple, white, green, red, blue, 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', 'purple', 'blue']. Hint: two colors are in the correct positions.
Guess: ['purple', 'purple', 'blue', 'blue']. Hint: one color is in the correct position.
Guess: ['white', 'red', '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', 'white', 'red', 'blue']. 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
red, blue, purple, red white, blue, white, white red, green, brown, blue brown, red, blue, white