C1111233131211111211113313331333133313331333133313331333133313112331   >>    C111123313121111121111331333133313331333133313331333133313331311233   <<    C1111233131211111211113313331333133313331333133313331333133313112333   >>      C1111233131211111211113313331333133313331333133313331333133313112332   >>