C1111233131211111211113313331333133313331333133313331333133313111113232321   >>    C111123313121111121111331333133313331333133313331333133313331311111323232   <<    C1111233131211111211113313331333133313331333133313331333133313111113232323   >>      C1111233131211111211113313331333133313331333133313331333133313111113232322   >>