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