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, 6) :

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		6	1	0	0	1
1	6	↔	11	0	1	1	0	5						3	6	12	3	6
2	3	↔	11	3	6	1	0	8	1	4	6	4	6	4	Even	Even	2	3
3	4		3	2	3	3	6	1						2	8	14	4	7
4	2		3	4	7	3	6	1						1	10	18	5	9
5	1		3	5	9	3	6	2	1	8	15	2	4	1	Even	Even	1	2
6	1	↔	1	1	2	5	9	0
7	1		1	5	9	1	2	0
(5)(11) - (9)(6) = 1