| Code | Definition | Number of Accessions | 
		
			| 1 | very short | 4 | 
		
			| 2 | (1= very short, 9= very long) | 22 | 
		
			| 3 | (1= very short, 9= very long) | 49 | 
		
			| 4 | (1= very short, 9= very long) | 131 | 
		
			| 5 | (1= very short, 9= very long) | 185 | 
		
			| 6 | (1= very short, 9= very long) | 159 | 
		
			| 7 | (1= very short, 9= very long) | 64 | 
		
			| 8 | (1= very short, 9= very long) | 17 | 
		
			| 9 | very long | 1 |