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