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