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