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