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