C11111211113313112113313331333133313331333121131211111133132213223311   >>    C1111121111331311211331333133313331333133312113121111113313221322331   <<    C11111211113313112113313331333133313331333121131211111133132213223313   >>      C11111211113313112113313331333133313331333121131211111133132213223312   >>