IL-Y-13S-S15C3 IL-Y-14P-S15L2-EF IL-Y-14P-S15T2-EF IL-Y-14S-S15C3 IL-Y-15P-S15L2-EF IL-Y-15P-S15T2-EF IL-Y-15S-S15C3 IL-Y-2P-S15L2-EF IL-Y-2P-S15T2-EF IL-Y-2P-S15T2-EF-2