The delay through {TAIL ~ the differential section D1} is directly related to the magnitudes of the resistances provided by resistors R2 and R3 and to the gate widths of the transistors Q7 and {HEAD ~ Q8} 
The delay through { TAIL ~ the differential section D1 } is directly related to the magnitudes of the resistances provided by resistors R2 and R3 and to the gate widths of the transistors Q7 and { HEAD ~ Q8 }
OTH OTH OTH TAIL 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 OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD