s2.3-3.py

__author__ = 'z'

a = int(input())
b = int(input())
c = int(input())
d = int(input())

print(end='\t')
for i in range(c, d + 1):
    print(i, end='\t')
print()

for i in range(a, b + 1):
    print(i, end='\t')
    for j in range(c, d + 1):
        print(i * j, end='\t')
    print()