C31321211111333132331211113313331333133313331333133313233312121   >>    C3132121111133313233121111331333133313331333133313331323331212   <<    C31321211111333132331211113313331333133313331333133313233312123   >>      C31321211111333132331211113313331333133313331333133313233312122   >>