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