C11112331312111112111133133313331333133313331333133313331323233231321   >>    C1111233131211111211113313331333133313331333133313331333132323323132   <<    C11112331312111112111133133313331333133313331333133313331323233231323   >>      C11112331312111112111133133313331333133313331333133313331323233231322   >>