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