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