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