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