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