A((JohnMayer)wnAU)and((electroniccommercE.wnTI)
B((JohnMayer)wnAU)and((electroniccommercE.wnAB.
C((JohnMayer)wnAF.and((electroniccommercE.wnTI)
D((JohnMayer)wnAF.and((electroniccommercE.wnAB.
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