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