The method is applicable to {HEAD ~ the formation} of {TAIL ~ single crystals} for any clathrate I or clathrate II structure 
of
The method is applicable to { HEAD ~ the formation } of { TAIL ~ single crystals } for any clathrate I or clathrate II structure
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH