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