Your example in string (byte) sorted order: 

input       packed    
ACGT        1b 00    
ACGTAAAA    1b 00 00    
ACGTAAAAA   1b 00 01
ACGTA       1b 01    
ACGTAA      1b 02    
ACGTAAA     1b 03

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In reply to Re^5: Unpack Fail to Decompress String? by BrowserUk
in thread Unpack Fail to Decompress String? by neversaint

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