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