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