C11112331312111112111133132313331333133313233313331333132322123222311   >>    C1111233131211111211113313231333133313331323331333133313232212322231   <<    C11112331312111112111133132313331333133313233313331333132322123222313   >>      C11112331312111112111133132313331333133313233313331333132322123222312   >>