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