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