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