C11112331312111112111133133313331333132313233313113313331323231   >>    C1111233131211111211113313331333133313231323331311331333132323   <<    C11112331312111112111133133313331333132313233313113313331323233   >>      C11112331312111112111133133313331333132313233313113313331323232   >>