The method 2 wherein step further comprises the following step performed after {TAIL ~ step} and wherein step further comprises the following step performed after {HEAD ~ step} : 
The method 2 wherein step further comprises the following step performed after { TAIL ~ step } and wherein step further comprises the following step performed after { HEAD ~ step } :
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH