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