{HEAD ~ The slave} responds in {TAIL ~ time slot} 7 with an acknowledgement and the suggested spectrum for transmission of data 
responds in
{ HEAD ~ The slave } responds in { TAIL ~ time slot } 7 with an acknowledgement and the suggested spectrum for transmission of data
HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH