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