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:
WLLC-LP
Table title:
Digital channels
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Channel </th><th colspan=1 rowspan=1 > Video </th><th colspan=1 rowspan=1 > Aspect </th><th colspan=1 rowspan=1 > PSIP Short Name </th><th colspan=1 rowspan=1 > Programming </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 42.1 </td><td colspan=1 rowspan=5 > 480i </td><td colspan=1 rowspan=5 > 4:3 </td><td colspan=1 rowspan=1 > WLLC-LP </td><td class="highlighted"  colspan=1 rowspan=1 > Main WLLC-LP programming / Univision </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 42.2 </td><td colspan=1 rowspan=1 > UniMas </td><td class="highlighted"  colspan=1 rowspan=1 > UniMás </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 42.3 </td><td colspan=1 rowspan=1 > Bounce </td><td class="highlighted"  colspan=1 rowspan=1 > Bounce TV </td></tr>
<tr> <td colspan=1 rowspan=1 > 42.4 </td><td colspan=1 rowspan=1 > Heartland </td><td colspan=1 rowspan=1 > Heartland </td></tr>
<tr> <td colspan=1 rowspan=1 > 42.5 </td><td colspan=1 rowspan=1 > Nuestra </td><td colspan=1 rowspan=1 > Nuestravision </td></tr>
</table>
Question:
What were the first three numerical channels for WLLC-LP, and what programming did each channel have?
Answer:
The programming from Univision, UniMás and Bounce TV on WLLC is broadcasted on channels 42.1, 42.2 and 42.3.