C11111211113313112113313331333133313331333132313331333133313331312213233311   >>    C1111121111331311211331333133313331333133313231333133313331333131221323331   <<    C11111211113313112113313331333133313331333132313331333133313331312213233313   >>      C11111211113313112113313331333133313331333132313331333133313331312213233312   >>