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