A multiplicity of teeth are mounted to a beam in {HEAD ~ a comb structure}, with the space between {TAIL ~ the teeth} defining slots 
A multiplicity of teeth are mounted to a beam in { HEAD ~ a comb structure } , with the space between { TAIL ~ the teeth } defining slots
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH