import uuid

ab= uuid.uuid1().hex[-12:]

ac= uuid.uuid1().hex[-12:][0:2]

print(ab)

i = 0

while i<10:

   ac1= uuid.uuid1().hex[-12:][i:i+2]

   print(ac1,end="-")

   i+=2

   if i>9:

       ac2 = uuid.uuid1().hex[-12:][i:i + 2]

       print(ac2)