B33113313132313113313223313331323133313223313231333133313311233131323132121   >>    B3311331313231311331322331333132313331322331323133313331331123313132313212   <<    B33113313132313113313223313331323133313223313231333133313311233131323132123   >>      B33113313132313113313223313331323133313223313231333133313311233131323132122   >>