C1111233131211111211113313331333133313331333133313331333121111331322312231   >>    C111123313121111121111331333133313331333133313331333133312111133132231223   <<    C1111233131211111211113313331333133313331333133313331333121111331322312233   >>      C1111233131211111211113313331333133313331333133313331333121111331322312232   >>