I have EQ6 so can not tell you exact keystrokes but I clearly understand what your issue is .
There is a way to Create a large block from multiple small blocks by copying them and pasting into a larger block. Also, look in the help menu - in EQ6 there is an option under Serendipity to merge blocks - I am sure that 7 has a similar option. In 6 you can merge 4 at a time so it may take you some playing around to get what you want.