B33113313132313113313223313331323132313233313331311233132233211   >>    B3311331313231311331322331333132313231323331333131123313223321   <<    B33113313132313113313223313331323132313233313331311233132233213   >>      B33113313132313113313223313331323132313233313331311233132233212   >>