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