2-20-2002
DEAR TK:
They are subdivisions of the first trust. An A-B trust is also called a bypass trust (or a bypass subtrust) and is designed to protect a spouse and save on estate taxes for estates over $600,000.
You would need to clarify your situation by giving more details, or visit a local library to find a book about trusts and look in the index to see if bypass trusts/subtrusts are mentioned, in order to get more information on how they are set up.
SINCERELY,
advisor