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