C11112331312111112111133132313331333133313232212111113331212111   >>    C1111233131211111211113313231333133313331323221211111333121211   <<    C11112331312111112111133132313331333133313232212111113331212113   >>      C11112331312111112111133132313331333133313232212111113331212112   >>