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