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