C112313233211113313121111331333133313232233132313331311331323133313112131   >>    C11231323321111331312111133133313331323223313231333131133132313331311213   <<    C112313233211113313121111331333133313232233132313331311331323133313112133   >>      C112313233211113313121111331333133313232233132313331311331323133313112132   >>