C11112331312111112111133132313331333133313233313113313331333132321111   >>    C1111233131211111211113313231333133313331323331311331333133313232111   <<    C11112331312111112111133132313331333133313233313113313331333132321113   >>      C11112331312111112111133132313331333133313233313113313331333132321112   >>