{HEAD ~ The kit} contains {TAIL ~ such items} as a transport tube, and collection swabs for obtaining a cell sample 
contains
{ HEAD ~ The kit } contains { TAIL ~ such items } as a transport tube , and collection swabs for obtaining a cell sample
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH