{HEAD ~ A brace} may be provided to keep {TAIL ~ post hole digger assembly} from rocking on the movable support bar 
provided to keep
{ HEAD ~ A brace } may be provided to keep { TAIL ~ post hole digger assembly } from rocking on the movable support bar
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH