C112313233211113313121111331333133313232233132313331313113313231111   >>    C11231323321111331312111133133313331323223313231333131311331323111   <<    C112313233211113313121111331333133313232233132313331313113313231113   >>      C112313233211113313121111331333133313232233132313331313113313231112   >>