X =	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15
Y =	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15
X ↔ Y

Ext-GCD(11, 2) :

i	GCD			Bezout				AOdd :						AEven :
	A	↔	B	ax	ay	bx	by	|A-B|	A↔B	Sx	Sy	ax ← Sx'	ay ← Sy'	A ← A/2	ax ← ax + Y	ay ← ay + X	ax ← ax/2	ay ← ay/2
0	11		2	1	0	0	1
1	2	↔	11	0	1	1	0	9						1	2	12	1	6
2	1	↔	11	1	6	1	0	10	1	2	6	2	6	5	Even	Even	1	3
3	5		1	1	3	1	6	4	0	2	9	2	9	2	4	20	2	10
4	2		1	2	10	1	6	1						1	Even	Even	1	5
5	1		1	1	5	1	6	0
6	1		1	1	5	1	6	0
7	1		1	1	5	1	6	0
(1)(11) - (5)(2) = 1