<tr>
<td>19 /<em>r</em></td>
<td>SBB <em>r/m32, r32</em></td>
<td>MR</td>
<td>Valid</td>
<td>Valid</td>
<td>Subtract with borrow <em>r32</em> from <em>r/m32.</em></td></tr>
<tr>
<td>REX.W + 19 /<em>r</em></td>
<td>SBB <em>r/m64, r64</em></td>
<td>MR</td>
<td>Valid</td>
<td>N.E.</td>
<td>Subtract with borrow <em>r64</em> from <em>r/m64.</em></td></tr>
<tr>
<td>1A /<em>r</em></td>
<td>SBB<em> r8, r/m8</em></td>
<td>RM</td>
<td>Valid</td>
<td>Valid</td>
<td>Subtract with borrow<em> r/m8</em> from <em>r8.</em><