B33113313132313113313223313331323132313331333133112213221121121   >>    B3311331313231311331322331333132313231333133313311221322112112   <<    B33113313132313113313223313331323132313331333133112213221121123   >>      B33113313132313113313223313331323132313331333133112213221121122   >>