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