C112233313331323223313331311331323133313331313231333131133131121133132313233311   >>    C11223331333132322331333131133132313331333131323133313113313112113313231323331   <<    C112233313331323223313331311331323133313331313231333131133131121133132313233313   >>      C112233313331323223313331311331323133313331313231333131133131121133132313233312   >>