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