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