Your goal is to find the secret four-color code. The following colors are possible: black, red, white, green, yellow, purple.
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: ['green', 'yellow', 'white', 'black']. Hint: three colors are in the secret code but in the wrong positions.
Guess: ['black', 'black', 'green', 'red']. Hint: three colors are in the secret code but in the wrong positions.
Guess: ['red', 'green', 'black', 'white']. 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
white, red, white, white purple, white, black, yellow green, green, yellow, red white, red, black, green