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