i find one solution that is similar5 c: T, ^4 r& g/ B' z7 Y2 L9 R1 R
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,bttvb8 W5 _: C+ t3 t" b
maybe there is a better one, let me see sin |