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