From [Wall of Force](http://www.d20pfsrd.com/magic/all-spells/w/wall-of-force/):

> 
> The caster can form the wall into a flat, vertical plane whose area is up to one 10-foot square per level. The wall must be continuous and unbroken when formed. If its surface is broken by any object or creature, the spell fails.
> 
> 
> 

Does this allow or disallow making a shape (such as a square or rectangle) relative to looking down? For example, could a (typical) large creature be surrounded by four 10x10ft squares of this spell in a single cast?