1. Comments on 12% rule

2. Conditions 1. OZI rule three-gluon exchangelight hadrons
2. Perturbative QCDexclusive processes
large momentum transfer
factorization theorem
3. Valence quark dominance
helicity conservation rule: pQCD,gluon,light quark

7. Valence quark dominance
Collinear quarks

8. 12% rule violation OZI rule violation
Momentum transfer is not large enough
pQCDlight hadrons:factorization?
Valence quark dominance? 
Non-perturbative
mixing
Higher Fock states
 should explain all of decay chanel