The sense resistors ensure that there is {TAIL ~ current sharing} through {HEAD ~ each} of the current control stages 
The sense resistors ensure that there is { TAIL ~ current sharing } through { HEAD ~ each } of the current control stages
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH