B33113313132313113313223313331323133313231313232233132313331323113312121   >>    B3311331313231311331322331333132313331323131323223313231333132311331212   <<    B33113313132313113313223313331323133313231313232233132313331323113312123   >>      B33113313132313113313223313331323133313231313232233132313331323113312122   >>