B33113313132313113313223313331323133313232233121133133313331333133313232132211   >>    B3311331313231311331322331333132313331323223312113313331333133313331323213221   <<    B33113313132313113313223313331323133313232233121133133313331333133313232132213   >>      B33113313132313113313223313331323133313232233121133133313331333133313232132212   >>