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