I33113313233313223313233313112132313231323331323132233132212121   >>    I3311331323331322331323331311213231323132333132313223313221212   <<    I33113313233313223313233313112132313231323331323132233132212123   >>      I33113313233313223313233313112132313231323331323132233132212122   >>