Complex sentence: These include a 30x30 insert stage, a 30x40 stage with standing sets, and two 40x50 stages that can be combined, forming a 40x100 sound stage.
Split into simpler sentences: These include a 30x30 insert stage, a 30x40 stage with standing sets, and two 40x50 stages. The two stages can be combined, forming a 40x100 sound stage.