Virginia 529, What counts as a unique account for figuring the deduction?

I have two kids.  I am the owner of all Virginia529 accounts.  These are Invest529.

 

There are three distinct accounts per kid - one for bonds, one for stocks, one for international stocks.  Each account has its own account number.  Virginia529 reports on each account separately.

 

That's a total of six separate accounts.  Can I deduct $4,000 of income for each account?

 

That's a huge potential deduction.  And it seems to be a unintended consequence of the the way Virginia529 reports and tracks the income.  Rather than having a single brokerage-type account per child with multiple holdings, they organize each type of holding into its own account.  It's to my benefit, but is that really what's allowed?