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