Michael Colunga (2 Feb 2012)
"Yod (10) and Hey (5), versus Tet (9) and Vav (6)."

Hello, John and Doves,
In one week, on 15 Shevat 5772--8 February 2012 is the New Year for Trees, "Tu B'Shevat.
Tu is used to get to 15 [Tet (9) and Vav (6)], because the normal, direct way to get to 15 would involve spelling out YH (I AM--the Name of HaShem) [Yod (10) and Hey (5)].
For more details, see http://www.hebrew4christians.com/Holidays/Winter_Holidays/Tu_B_shevat/tu_b_shevat.html.
Baruch HaShem Adonai Roi,
Mike C.