C1111233131211111211113313331333133313331322331333131211113323331   >>    C111123313121111121111331333133313331333132233133313121111332333   <<    C1111233131211111211113313331333133313331322331333131211113323333   >>      C1111233131211111211113313331333133313331322331333131211113323332   >>