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