# ca4, minimun of two
t = int (input())
for i in range (t):
s = input ()
ns = s. split ()
a,b = int (ns [0]), int (ns [1])
m = a
if b < m:
m = b
print (m, end = " ")
IyBjYTQsIG1pbmltdW4gb2YgdHdvCgp0ID0gaW50IChpbnB1dCgpKQpmb3IgaSBpbiByYW5nZSAodCk6CiAgcyA9IGlucHV0ICgpCiAgbnMgPSBzLiBzcGxpdCAoKQogIGEsYiA9IGludCAobnMgWzBdKSwgaW50IChucyBbMV0pCiAgbSA9IGEKICBpZiBiIDwgbToKICAgIG0gPSBiCiAgcHJpbnQgKG0sIGVuZCA9ICIgIik=