O	S	I	R	I	S
		AA	AA	A	A	A	A	A									Z	Z	Z	Z	Z	Z	Z
A	B	C	D	E	F	G	H	I	J	K	L	M	N	O	P	Q	R	S	T	U	V	W	X	Y	Z
1	2	3	4	5	6	7	8	9	1	2	3	4	5	6	7	8	9	1	2	3	4	5	6	7	8
		A	A	A	A	A	A	A	A	A					Z	Z	Z	Z	Z	Z	Z	Z	Z
		1	1	1	1	1	1	1	1	1					8	8	8	8	8	8	8	8	8
										1					8
									1							8
								1									8
							1											8
						1													8
					1															8
				1																	8
			1																			8
		1																					8