Take 1 or 4

Loki and Elle are playing a game with a pile of stones. A turn consists of removing 1 or 4 stones from the pile. The aim of the game is to remove the last stone(s) from the pile.

Loki and Elle are both very good players.

Question:

They play four games, with starting piles of 27, 33, 34 and 41 stones. Loki starts first in each game. How many can he win?