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