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