From Hard Drop - Tetris Wiki
The Glitter Brooch by MalaiABUeditor.
First Bag
There are 3 requirements (from left to right): L before Z, I before S and J before O.
Second Bag and later
Ideally, one should stack like this if S comes before Z then J, it can be made to a 6-line Perfect Clear after a T-Spin Double.
If the above is not feasible, one can go for 8 lines in one of these three stacking methods.
The first is the most ideal. It involves needing the S piece berfore the L piece. The Perfect Clear probability is 88.81 %.
If one cannot make a Perfect Clear, they may still be able to make a Perfect Clear after 12 lines. Below is an example.
If either S comes before J before Z or Z comes before O, then the below is the stacking method. The Perfect Clear probability is unknown.
If one cannot make a Perfect Clear, they can make a T-Spin Double, in most cases, one of these 2 ways, and may also result in a 12-line Perfect Clear.
If O comes before Z, then the third stacking method is as follows. The Perfect Clear probability is 40.71 %.
If one cannot make a Perfect Clear, it can be followed by LST stacking. If they can, they may go for 12-line Perfect Clear.
Late O Piece
An alternative is placing the O Piece after the T-Spin Double as in the diagrams below.
It forms exactly the same shape as TKI 3 Flat Top. Some examples of continuations:
