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