B33113313132313113313223313331323133313223313231333132322331312323132213121   >>    B3311331313231311331322331333132313331322331323133313232233131232313221312   <<    B33113313132313113313223313331323133313223313231333132322331312323132213123   >>      B33113313132313113313223313331323133313223313231333132322331312323132213122   >>