These modules, {HEAD ~ AFE} and DSP, may be found on {TAIL ~ a single universal line card} 
found on
These modules , { HEAD ~ AFE } and DSP , may be found on { TAIL ~ a single universal line card }
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL