| Code | Definition | Number of Accessions | 
		
			| 1 | very short | 16 | 
		
			| 2 | (1= very short, 9= very long) | 32 | 
		
			| 3 | (1= very short, 9= very long) | 180 | 
		
			| 4 | (1= very short, 9= very long) | 342 | 
		
			| 5 | (1= very short, 9= very long) | 357 | 
		
			| 6 | (1= very short, 9= very long) | 358 | 
		
			| 7 | (1= very short, 9= very long) | 356 | 
		
			| 8 | (1= very short, 9= very long) | 274 | 
		
			| 9 | very long | 94 |