Again, each secondary array may comprise similar width cutters at the same radial distance from the bit axis, or {HEAD ~ cutters} at {TAIL ~ different radial distances} from the tool axis 
at
Again , each secondary array may comprise similar width cutters at the same radial distance from the bit axis , or { HEAD ~ cutters } at { TAIL ~ different radial distances } from the tool axis
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 REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH