# мини таблица умножения в виде таблицы
a = int(input())
b = int(input())
c = int(input())
d = int(input())
for num in range (c,d+1):
    print("\t"+ str(num), end="")
print()
for num in range (a, b+1):
    print (num,end="\t")
    for num_2 in range (c, d+1):
        print(num * num_2, end="\t") 
    print()