1. full star: five people per row, four rows, before and after the insertion of empty station
2. two rows: ten before and ten after, can be aligned can be inserted into the empty
3. a row: from high to short, or tall in the middle, the more the side of the shorter
4. triangle: each row respectively 1/2/4/6/7
5. grouping: two groups of 3-4 people, respectively, in the stage Upstage door front area and downstage door back area, two rows in the center, 6-7 people per row, diagonal rows
6. Two circles: inside 8 outside 12
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There are many kinds of ah, randomly draw for reference: