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