C1111233131211111211113313331333133313331333133313331333121111331323212111   >>    C111123313121111121111331333133313331333133313331333133312111133132321211   <<    C1111233131211111211113313331333133313331333133313331333121111331323212113   >>      C1111233131211111211113313331333133313331333133313331333121111331323212112   >>