I233231323331311331313232233132211233132313233313232213233313211   >>    I23323132333131133131323223313221123313231323331323221323331321   <<    I233231323331311331313232233132211233132313233313232213233313213   >>      I233231323331311331313232233132211233132313233313232213233313212   >>