B33113313132313113313223313331323133313223313231333133311221123232131211   >>    B3311331313231311331322331333132313331322331323133313331122112323213121   <<    B33113313132313113313223313331323133313223313231333133311221123232131213   >>      B33113313132313113313223313331323133313223313231333133311221123232131212   >>