B33113313132313113313223313331323132313233313331312111133133313221323123232131   >>    B3311331313231311331322331333132313231323331333131211113313331322132312323213   <<    B33113313132313113313223313331323132313233313331312111133133313221323123232133   >>      B33113313132313113313223313331323132313233313331312111133133313221323123232132   >>