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