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