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