def test(a, b, c, d, n):
z1=a*10+b
z2=c*10+d
if(z1*z2 == n):
print(z1, z2, n)
for n in range(1000, 10000):
x=n
u=x%10; x//=10
d=x%10; x//=10
c=x%10; x//=10
m=x
test(m, c, d, u, n) # 12 test
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