Well, maybe it's possible, but highly unlikely considering that
you get more and more bidding points at the start of every
semester. So if you can't get the required modules in Yr 1 and Yr 2
you can really show hand and throw in thousands of points in Yr 3
and Yr 4.
Of course, the possible end result of this is that Yr 1 students
may end up taking Yr 3 modules, and vice versa. 
I think Lazerlordz is better informed in this... For me, my core
engineering modules are all guaranteed and I only have to spend one
point for each of them.
