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