B33113313132313113313223313331323133313231313232233132233131333132313231211231   >>    B3311331313231311331322331333132313331323131323223313223313133313231323121123   <<    B33113313132313113313223313331323133313231313232233132233131333132313231211233   >>      B33113313132313113313223313331323133313231313232233132233131333132313231211232   >>