I'm looking for a fic in which we follow Bucky after he was found by Hydra. They try to brainwash him but instead of "deleting" Bucky and replacing him with the Winter Soldier, they create new personalities: Sasha, affable and smart, Alexej, young and idealistic, and the Winter Soldier. Over time, Bucky learns to communicate with them, and they end up working together to get away from Hydra and later protect Steve.
I'm sure I saw this on AO3 but my AO3 works search skills failed me. :(
Can anyone point me in the right direction?