C11112331312111112111133132313331333133313233313113313331333132312323221   >>    C1111233131211111211113313231333133313331323331311331333133313231232322   <<    C11112331312111112111133132313331333133313233313113313331333132312323223   >>      C11112331312111112111133132313331333133313233313113313331333132312323222   >>