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