C12121321333132233131333131133131211113313113313113313232213111   >>    C1212132133313223313133313113313121111331311331311331323221311   <<    C12121321333132233131333131133131211113313113313113313232213113   >>      C12121321333132233131333131133131211113313113313113313232213112   >>