Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
South African Class 91-000
Table title:
Works numbers
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Loco no. </th><th colspan=1 rowspan=1 > Works no. </th><th colspan=1 rowspan=1 > Disposal </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 91-001 </td><td class="highlighted"  colspan=1 rowspan=1 > 38604 </td><td colspan=1 rowspan=1 > Outeniqua Transport Museum </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 91-002 </td><td class="highlighted"  colspan=1 rowspan=1 > 38603 </td><td colspan=1 rowspan=1 > Humewood Depot Sold for scrap November 2018. </td></tr>
<tr> <td colspan=1 rowspan=1 > 91-003 </td><td colspan=1 rowspan=1 > 38605 </td><td colspan=1 rowspan=1 > RRL 91-03 Sold auction 17 Oct 2017 and scrapped. </td></tr>
<tr> <td colspan=1 rowspan=1 > 91-004 </td><td colspan=1 rowspan=1 > 38606 </td><td colspan=1 rowspan=1 > Humewood Depot Sold for scrap November 2018. </td></tr>
<tr> <td colspan=1 rowspan=1 > 91-005 </td><td colspan=1 rowspan=1 > 38607 </td><td colspan=1 rowspan=1 > Humewood Depot Sold to the Apple Express organization in November 2018. Operational. </td></tr>
<tr> <td colspan=1 rowspan=1 > 91-006 </td><td colspan=1 rowspan=1 > 38608 </td><td colspan=1 rowspan=1 > Paton's Country Narrow Gauge Railway Operational. </td></tr>
<tr> <td colspan=1 rowspan=1 > 91-007 </td><td colspan=1 rowspan=1 > 38609 </td><td colspan=1 rowspan=1 > Paton's Country Narrow Gauge Railway Operational. </td></tr>
<tr> <td colspan=1 rowspan=1 > 91-008 </td><td colspan=1 rowspan=1 > 38610 </td><td colspan=1 rowspan=1 > Humewood Depot Sold for scrap November 2018. </td></tr>
<tr> <td colspan=1 rowspan=1 > 91-009 </td><td colspan=1 rowspan=1 > 38611 </td><td colspan=1 rowspan=1 > RRL rebuilt as gen-set UL-01 Capitol Park (Rovos Rail) Shunter on 3'6" gauge bogies (Numbered 91-011) Operational. </td></tr>
<tr> <td colspan=1 rowspan=1 > 91-010 </td><td colspan=1 rowspan=1 > 38612 </td><td colspan=1 rowspan=1 > Sandstone Railroad. Operational </td></tr>
<tr> <td colspan=1 rowspan=1 > 91-011 </td><td colspan=1 rowspan=1 > 38613 </td><td colspan=1 rowspan=1 > Sold auction 11 Jul 2013, Overhauled and re-sold in 2017 to BTU Argentina using Meter Gauge Bogies. Operational. </td></tr>
<tr> <td colspan=1 rowspan=1 > 91-012 </td><td colspan=1 rowspan=1 > 38614 </td><td colspan=1 rowspan=1 > RRL 91-01 Sold auction 17 Oct 2017 and scrapped. </td></tr>
<tr> <td colspan=1 rowspan=1 > 91-013 </td><td colspan=1 rowspan=1 > 38615 </td><td colspan=1 rowspan=1 > Sold auction 11 Jul 2013 Stored inside Humewood Road Depot - operational - for sale. </td></tr>
<tr> <td colspan=1 rowspan=1 > 91-014 </td><td colspan=1 rowspan=1 > 38616 </td><td colspan=1 rowspan=1 > Scrapped Feb 1997 following wreck. </td></tr>
<tr> <td colspan=1 rowspan=1 > 91-015 </td><td colspan=1 rowspan=1 > 38617 </td><td colspan=1 rowspan=1 > Humewood depot Sold for scrap November 2018. </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 91-016 </td><td class="highlighted"  colspan=1 rowspan=1 > 38619 </td><td colspan=1 rowspan=1 > RRL 91-04, Sold to Sandstone Estates for spare parts in 2017. Currently on 3'6" bogies. </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 91-017 </td><td class="highlighted"  colspan=1 rowspan=1 > 38618 </td><td colspan=1 rowspan=1 > RRL 91-02 Sold auction 17 Oct 2017 and scrapped. </td></tr>
<tr> <td colspan=1 rowspan=1 > 91-018 </td><td colspan=1 rowspan=1 > 38620 </td><td colspan=1 rowspan=1 > Sold auction 11 Jul 2013 Stored inside Humewood Road Depot - operational - for sale. </td></tr>
<tr> <td colspan=1 rowspan=1 > 91-019 </td><td colspan=1 rowspan=1 > 38621 </td><td colspan=1 rowspan=1 > Humewood Depot Sold for scrap November 2018 then re-sold to Sandstone Estates in February 2019. </td></tr>
<tr> <td colspan=1 rowspan=1 > 91-020 </td><td colspan=1 rowspan=1 > 38622 </td><td colspan=1 rowspan=1 > Humewood Depot To be retained by the THF for lend lease to the Apple Express organization. </td></tr>
</table>
Question:
Are any locomotive numbers out of sequence with their unit numbers?
Answer:
With the exception of numbers 91-001 (38604), 91-002 (38603), 91-016 (38619) and 91-017 (38618), the Class 91-000 works numbers are in sequence with their unit numbers.