123 is the mb blitz team one, no? Or maybe i wrongly remember, anyways, if is that one then my tip is: hinata.

Edit: that's the first and easiest of the hard exams. 127, 132, 137 and 140 are 100 times harder. Btw, at 52k power you just go tru them easily by following the guides, garv, for example, made some of them.