C112313233211113313121111331333133313232233132313331313113313233231   >>    C11231323321111331312111133133313331323223313231333131311331323323   <<    C112313233211113313121111331333133313232233132313331313113313233233   >>      C112313233211113313121111331333133313232233132313331313113313233232   >>