Similarly, the bottom surface 32 may include {HEAD ~ a second step} 46 that extends from {TAIL ~ the bottom surface} 32 
extends from
Similarly , the bottom surface 32 may include { HEAD ~ a second step } 46 that extends from { TAIL ~ the bottom surface } 32
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH