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(5, 1) :

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	5		1	1	0	0	1
1	5		1	1	0	0	1	4	0	1	1	1	1	2	2	6	1	3
2	2		1	1	3	0	1	1						1	2	8	1	4
3	1		1	1	4	0	1	0
4	1		1	1	4	0	1	0
5	1		1	1	4	0	1	0
6	1		1	1	4	0	1	0
7	1		1	1	4	0	1	0
(1)(5) - (4)(1) = 1