C1111233131211111211113313331333133313221211113313331333133313233313111221   >>    C111123313121111121111331333133313331322121111331333133313331323331311122   <<    C1111233131211111211113313331333133313221211113313331333133313233313111223   >>      C1111233131211111211113313331333133313221211113313331333133313233313111222   >>