It would take 30 seconds for me to grab 4 or 5 MMs and stack the ask. Seriously, it's literally nothing more than selecting MM X sell X amount of shares at X price, then placing another order with MM y, sell x amount of shares etc....
That's all there is to it.... Anytime you see the MMs setting up in that type of way, just know thats one or more traders doing it, not the MM it self. It still amazes me how many people just don't understand the very basics of what MMs do, and how they do it. Most people talk about them as if they were an actual human trader sitting down at a computer....