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(10, 15) :

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	10		15	1	0	0	1
1	10		15	1	0	0	1	5						5	16	10	8	5
2	5		15	8	5	0	1	10	1	8	6	8	6	5	Even	Even	4	3
3	5	↔	5	4	3	8	5	0
4	5	↔	5	4	3	8	5	0
5	5	↔	5	4	3	8	5	0
6	5	↔	5	4	3	8	5	0
7	5		5	8	5	4	3	0
(8)(10) - (5)(15) = 5