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