MKO Stacking is a technique that usually results in a Perfect Clear after 4 cleared lines or 2 T-Spin Doubles within the first two bags. Unfortunately, both L and J are required to come early in first bag and the first T-Spin cannot be entirely prepared within the first bag. So, if T the piece comes first in second bag, the player is stuck with 2 T pieces and must use one to make the T-Spin overhang (provided the PC does not work which is always the case of a late second O). Otherwise, the T-Spin overhang can be made with the S or Z pieces. There is a decent but hard-to-spot Perfect Clear opportunity after 8 cleared lines, if the pieces are stacked like shown in the fifth picture.