first ot all ,celebrate to two group which have 6 in a group公仔箱論壇7 ]6 W& B2 m+ B( v( Z
and then celebrate again to 3 in a group from which more heavier% ~, a: s) s- M7 N
lastly, take two ping pongs from the heavier group and put in
6 \! D# |8 {$ a' u5 R4 {* J1 ntvb now,tvbnow,bttvbwhen there are same quality & y8 I3 |6 w& D( v( A
that's mean the third ping pong is different
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i got it in 1 minute |