A method of preparing the polypeptide, said {HEAD ~ method} comprising {TAIL ~ the steps} of: 
comprising
A method of preparing the polypeptide , said { HEAD ~ method } comprising { TAIL ~ the steps } of :
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH