The dispenser includes a bag or {HEAD ~ sachet} which has {TAIL ~ a liquid permeable wall} 
has
The dispenser includes a bag or { HEAD ~ sachet } which has { TAIL ~ a liquid permeable wall }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL