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