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