N = 12
N = str(N)
N = N[-1]

hon = [str(n) for n in list([2,4,5,7,9])]
pon = [str(n) for n in list([0,1,6,8])]
bon = ["3"]

if N in hon:
  print('hon')
elif N in pon:
  print("pon")
elif N in bon:
  print("bon") 
else:
  print("booom")