i find one solution that is similarwww3.tvboxnow.com0 K4 L) _5 F# S& H1 |& p
but i can't specify the heavier one is abnormal or the lighter one is abnormal when the case that has only two balls left....tvb now,tvbnow,bttvb, I7 F. g4 U( W4 J! m$ ]4 R
maybe there is a better one, let me see sin |