C1111233131211111211113313331333133313331333133313331333121111331323312233231   >>    C111123313121111121111331333133313331333133313331333133312111133132331223323   <<    C1111233131211111211113313331333133313331333133313331333121111331323312233233   >>      C1111233131211111211113313331333133313331333133313331333121111331323312233232   >>