B33113313132313113313223313331323131323133313232233131333133313233313221111   >>    B3311331313231311331322331333132313132313331323223313133313331323331322111   <<    B33113313132313113313223313331323131323133313232233131333133313233313221113   >>      B33113313132313113313223313331323131323133313232233131333133313233313221112   >>