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