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