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