B33113313132313113313223313331323132313233313132233133313231321   >>    B3311331313231311331322331333132313231323331313223313331323132   <<    B33113313132313113313223313331323132313233313132233133313231323   >>      B33113313132313113313223313331323132313233313132233133313231322   >>