C1111233131211111211113313331333133313331333133313331333133313332213233111   >>    C111123313121111121111331333133313331333133313331333133313331333221323311   <<    C1111233131211111211113313331333133313331333133313331333133313332213233113   >>      C1111233131211111211113313331333133313331333133313331333133313332213233112   >>