Defender 2 is straight up mark. Defenders 1 and 3 are sagging into the lanes, letting the disc be swung to the sidelines.
The disc is swung, and Defender 3 is running across to shut off the around. Defenders 2 and 1 are in line with 3, shutting off lanes up the middle of the field.
Defender 3 is forcing back towards the middle.
Disc is centered again. Straight up mark,
The swing is continued. Defender 1 is going wide to shut off the continuation around.
Defender 1 is forcing back towards the middle, Defenders 2 and 3 are clogging the middle lanes.