{HEAD ~ A process} for obtaining a virus of the instant invention may comprise {TAIL ~ the following steps}: 
comprise
{ HEAD ~ A process } for obtaining a virus of the instant invention may comprise { TAIL ~ the following steps } :
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH