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