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