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