You can bounce the bubbles off the walls to get them where you want.

5^^^^^^^^^^^^^^^^^7
|   ***           |
| *  **           |
|/    +++         |
|\                |
| \               |
|  \              |
|   \             |
|    \            |
|     \           |
|      \          |
|       \         |
L------|-^-|------J


If you do not know where to place a bubble, place it underneath a two bubble 
combo, but do not block it off completely... Then when you hit the other 
combo off, the extra bubble will also fall. This is important in VS-CPU. 
Here it is in two phases...

       --1--
5^^^^^^^^^^^^^^^^^7
|   ***           |
| *  **           |
|/    +           |
|\                |
| \               |
|  \              |
|   \             |
|    \            |
|     \           |
|      \          |
|       \         |
L------|-^-|------J


       --2--
5^^^^^^^^^^^^^^^^^7
|   ||    ||      |
|   \/    \/      |
|                 |
|      ||         |
|      \/         |
|                 |
|    ****         |
|      **         |
|       +         |
|                 |
|                 |
L------|-^-|------J