first ot all ,celebrate to two group which have 6 in a group
& a) M9 A4 w2 [5 {tvb now,tvbnow,bttvband then celebrate again to 3 in a group from which more heavier
$ J, y9 j) w- J& N5.39.217.77:8898lastly, take two ping pongs from the heavier group and put in
# z* O% {& C& v0 [* w3 g1 u5.39.217.77:8898when there are same quality
0 Y% v! O/ R( l6 Gtvb now,tvbnow,bttvbthat's mean the third ping pong is different
* ~ d& v( |( |' D+ F5 C
4 V2 ?1 Z3 ?# _i got it in 1 minute |