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