{HEAD ~ The lower pipelines} may continue {TAIL ~ execution} until the mispredicted branch instruction confirms, at which time all uncommitted instructions are flushed from the lower pipelines 
continue
{ HEAD ~ The lower pipelines } may continue { TAIL ~ execution } until the mispredicted branch instruction confirms , at which time all uncommitted instructions are flushed from the lower pipelines
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH