Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Name | Built by HM Dockyard | Ordered | Laid down | Launched |
| --- | --- | --- | --- | --- |
| Leveret (2nd of name) | Portsmouth | 25 March 1823 | May 1823 | 19 February 1825 |
| Musquito | Portsmouth | 25 March 1823 | May 1823 | 19 February 1825 |
| Hearty | Chatham | 25 March 1823 | July 1823 | 22 October 1824 |
| Myrtle | Portsmouth | 25 March 1823 | July 1823 | 14 September 1825 |
| Lapwing | Chatham | 25 March 1823 | September 1823 | 20 February 1825 |
| Sheldrake | Pembroke | 25 March 1823 | November 1823 | 19 May 1825 |
| Harpy | Chatham | 25 March 1823 | March 1824 | 16 July 1825 |
| Fairy | Chatham | 25 March 1823 | July 1824 | 25 April 1826 |
| Skylark | Pembroke | 25 March 1823 | May 1825 | 6 May 1826 |
| Espoir | Chatham | 25 March 1823 | January 1825 | 9 May 1826 |
| Calypso (2nd of name) (ex Hyaena) | Chatham | 25 March 1823 | March 1825 | 19 August 1826 |
| Spey | Pembroke | 25 March 1823 | July 1825 | 6 October 1827 |
| Variable | Pembroke | 25 March 1823 | May 1826 | 6 October 1827 |
| Briseis (2nd of name) | Deptford | 25 March 1823 | August 1827 | 3 July 1829 |
| Rapid | Portsmouth | 25 March 1823 | January 1824 | 17 August 1829 |
| Recruit | Portsmouth | 25 March 1823 | February 1825 | 17 August 1829 |
| Reindeer | Plymouth | 25 March 1823 | December 1824 | 29 September 1829 |
| Thais | Pembroke | 25 March 1823 | July 1828 | 12 October 1829 |
| Rolla (2nd of name) | Plymouth | 25 March 1823 | June 1825 | 10 December 1829 |
| Savage | Plymouth | 25 March 1823 | October 1829 | 29 December 1830 |
| Saracen | Plymouth | 25 March 1823 | December 1829 | 30 January 1831 |
| Scorpion | Plymouth | 25 March 1823 | June 1830 | 28 July 1832 |
| Sealark | Plymouth | 25 March 1823 | November 1830 | Cancelled 10 January 1831 |
| Hyaena (ex Calypso) | Deptford | 25 March 1823 | unknown | Cancelled 21 February 1831 |
| Termagent | Portsmouth | 23 November 1824 | October 1829 | 26 March 1838 |
| Lynx | Portsmouth | 23 November 1824 | February 1830 | 2 September 1833 |
| Nautilus | Woolwich | 7 December 1824 | April 1829 | 11 March 1830 |
| Curlew | Woolwich | 7 December 1824 | November 1829 | 25 February 1830 |
| Delight (2nd of name) | Chatham | 23 May 1826 | August 1827 | 27 November 1829 |
| Algerine (2nd of name) | Chatham | 23 May 1826 | October 1827 | 1 August 1829 |
| Griffon (2nd of name) | Chatham | 23 May 1826 | July 1830 | 11 September 1832 |
| Forester (2nd of name) | Chatham | 23 May 1826 | September 1830 | 28 August 1832 |
| Partridge (2nd of name) | Pembroke | 28 October 1826 | August 1828 | 12 October 1829 |
| Wizard | Pembroke | 28 October 1826 | October 1829 | 24 May 1830 |
| Charybdis | Portsmouth | 28 October 1826 | December 1829 | 27 February 1831 |
| Buzzard | Portsmouth | 28 October 1826 | December 1829 | 23 March 1834 |
| Foxhound | Plymouth | 28 October 1826 | unknown | Cancelled 21 February 1831 |
| Helena | Plymouth | 28 October 1826 | unknown | Cancelled 21 February 1831 |
Question:
What ordered has helena as the name?
Answer:
28 October 1826