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