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