Find the output of the following program segment:

i = 0; sum = 0
while i < 9:
      if i % 4 == 0:
         sum = sum + i
      i = i + 2
print (sum)

Write the output of the following:

for i in '123' :
   print ("Message",i,)

Write the output of the following:

for j in range (10,6,-2) :
   print (j*2)

Write the output of the following:

for x in range (1, 6) :
   for y in range (1, x+1):
      print (x, ' ', y)