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