I33113313233313223313233313112132313231323133313223313113312121   >>    I3311331323331322331323331311213231323132313331322331311331212   <<    I33113313233313223313233313112132313231323133313223313113312123   >>      I33113313233313223313233313112132313231323133313223313113312122   >>