# 1 a
print('1 2 3 4')

# 1 b

print('1 ', end='')
print('2 ', end='')
print('3 ', end='')
print('4')

# 2 a

print('1\n2\n3\n4')

# 2 b

print('1')
print('2')
print('3')
print('4')