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