C13332313311211113313331333131133133313232233132313113313232213131   >>    C1333231331121111331333133313113313331323223313231311331323221313   <<    C13332313311211113313331333131133133313232233132313113313232213133   >>      C13332313311211113313331333131133133313232233132313113313232213132   >>