Number group		Front design		Designators		Earliest known date	
	
				--------------------------------------------------------------------------------------------

				91,000,001		Handy Hints		T-a1 to T-a4		June 2010
				   to
				91,100,000

				91,100,001		Handy Hints		T-b1 to T-b4		June 2010
				   to
				91,200,000

				91,200,001		Handy Hints		T-b1 to T-b4		June 2010
				   to						and T-c1 to T-c4	June 2010									
				91,300,000

				91,300,001		Handy Hints		T-c1 to T-c4		June 2010
				   to
				91,400,000

				91,400,001		Handy Hints		T-d1 to T-d4		June 2010
				   to
				91,500,000

				91,500,001		Handy Hints		T-a1 to T-a4		July 2010
				   to						
				91,600,000

				91,600,001		Handy Hints		T-a1 to T-a4		August 2010
				   to						and T-b1 to T-b4	July 2010									
				91,700,000

				91,700,001		Handy Hints		T-b1 to T-b4		July 2010
				   to
				91,800,000

				91,800,001		Handy Hints		T-b1 to T-b4		July 2010
				   to						and T-c1 to T-c4	July 2010									
				91,900,000

				91,900,001		Handy Hints		T-c1 to T-c4		July 2010
				   to
				92,000,000