ตัด string เอาคำหลังเมื่อเจอตัวอักษรนี้ ที่วนลูปหลายๆตอน ยังไง

<table border="1" cellpadding="3" cellspacing="0">
                  <tr >
                    <td width="50">ลำดับ</td>
                    <td >ข้อมูล</td>
                    <td>&nbsp;</td>                     
                                        
                     <td>&nbsp;</td>                     
                                        
                     <td>&nbsp;</td>                     
                                        
                     <td>&nbsp;</td>                     
                                        
                     <td>&nbsp;</td>                     
                                        
                     <td>&nbsp;</td>                     
  </tr>
                       <tr>
                      <td>1</td>
                      <td>ข้อมูล AAAAA </td>
                      <td><input type="text" name="MM-FI18F51I21H55" id="MM-FI18F51I21H55" size="5"></td>                     
                                          
                      <td><input type="text" name="MM-FI11F1I1H56" id="MM-FI11F1I1H56" size="5"></td>                     
                                          
                      <td><input type="text" name="MM-FI1F1I1H57" id="MM-FI1F1I1H57" size="5"></td>                     
                                          
                      <td><input type="text" name="MM-FI1F1I1H58" id="MM-FI1F1I1H58" size="5"></td>                     
                                          
                      <td><input type="text" name="MM-FI1F1I1H59" id="MM-FI1F1I1H59" size="5"></td>                     
                                          
                      <td><input type="text" name="MM-FI1F1I1H60" id="MM-FI1F1I1H60" size="5"></td>                     
                                            
     </tr>
                         <tr>
                      <td>2</td>
                      <td>ข้อมูล BBBBB</td>
                      <td><input type="text" name="MM-FI2F1I2H55" id="MM-FI2F1I2H55" size="5"></td>                     
                                          
                      <td><input type="text" name="MM-FI2F1I2H56" id="MM-FI2F1I2H56" size="5"></td>                     
                                          
                      <td><input type="text" name="MM-FI2F1I2H57" id="MM-FI2F1I2H57" size="5"></td>                     
                                          
                      <td><input type="text" name="MM-FI2F1I2H58" id="MM-FI2F1I2H58" size="5"></td>                     
                                          
                      <td><input type="text" name="MM-FI2F1I2H59" id="MM-FI2F1I2H59" size="5"></td>                     
                                          
                      <td><input type="text" name="MM-FI2F1I2H60" id="MM-FI2F1I2H60" size="5"></td>                     
                                            
     </tr>
                         <tr>
                      <td>3</td>
                      <td>ข้อมูล CCCCC</td>
                      <td><input type="text" name="MM-FI3F1I3H55" id="MM-FI3F1I3H55" size="5"></td>                     
                                          
                      <td><input type="text" name="MM-FI3F1I3H56" id="MM-FI3F1I3H56" size="5"></td>                     
                                          
                      <td><input type="text" name="MM-FI3F1I3H57" id="MM-FI3F1I3H57" size="5"></td>                     
                                          
                      <td><input type="text" name="MM-FI3F1I3H58" id="MM-FI3F1I3H58" size="5"></td>                     
                                          
                      <td><input type="text" name="MM-FI3F1I3H59" id="MM-FI3F1I3H59" size="5"></td>                     
                                          
                      <td><input type="text" name="MM-FI3F1I3H60" id="MM-FI3F1I3H60" size="5"></td>                     
                                            
     </tr>
                         <tr>
                      <td>4</td>
                      <td>ข้อมูล DDDDD</td>
                      <td><input type="text" name="MM-FI4F1I4H55" id="MM-FI4F1I4H55" size="5"></td>                     
                                          
                      <td><input type="text" name="MM-FI4F1I4H56" id="MM-FI4F1I4H56" size="5"></td>                     
                                          
                      <td><input type="text" name="MM-FI4F1I4H57" id="MM-FI4F1I4H57" size="5"></td>                     
                                          
                      <td><input type="text" name="MM-FI4F1I4H58" id="MM-FI4F1I4H58" size="5"></td>                     
                                          
                      <td><input type="text" name="MM-FI4F1I4H59" id="MM-FI4F1I4H59" size="5"></td>                     
                                          
                      <td><input type="text" name="MM-FI4F1I4H60" id="MM-FI4F1I4H60" size="5"></td>                     
                                            
     </tr>
                         <tr>
                      <td>5</td>
                      <td>ข้อมูล EEEEEE</td>
                      <td><input type="text" name="MM-FI5F1I5H55" id="MM-FI5F1I5H55" size="5"></td>                     
                                          
                      <td><input type="text" name="MM-FI5F1I5H56" id="MM-FI5F1I5H56" size="5"></td>                     
                                          
                      <td><input type="text" name="MM-FI5F1I5H57" id="MM-FI5F1I5H57" size="5"></td>                     
                                          
                      <td><input type="text" name="MM-FI5F1I5H58" id="MM-FI5F1I5H58" size="5"></td>                     
                                          
                      <td><input type="text" name="MM-FI5F1I5H59" id="MM-FI5F1I5H59" size="5"></td>                     
                                          
                      <td><input type="text" name="MM-FI5F1I5H60" id="MM-FI5F1I5H60" size="5"></td>                         
                                            
     </tr>
</table>

พอหน้าถัดไป อยากให้วนลูปหา ให้ได้ค่า
MM-FI18F51I21H55
MM-FI = 18
F = 51
I = 21
H = 55


MM-FI11F1I1H56
MM-FI = 11
F = 1
I = 1
H = 56