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