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