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