C31321211111333132331211113313331333133313331333133313233121211   >>    C3132121111133313233121111331333133313331333133313331323312121   <<    C31321211111333132331211113313331333133313331333133313233121213   >>      C31321211111333132331211113313331333133313331333133313233121212   >>