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