B33132212112331323223313211232333132313331322331333133313232233131212121   >>    B3313221211233132322331321123233313231333132233133313331323223313121212   <<    B33132212112331323223313211232333132313331322331333133313232233131212123   >>      B33132212112331323223313211232333132313331322331333133313232233131212122   >>