B33113313132313113313223313331323223313221123313231323221333131   >>    B3311331313231311331322331333132322331322112331323132322133313   <<    B33113313132313113313223313331323223313221123313231323221333133   >>      B33113313132313113313223313331323223313221123313231323221333132   >>