What how often.
( What ( how ( often . ) ) )
(ROOT (FRAG (SBAR (WHNP (WP What)) (FRAG (SBARQ (WHNP (WRB how)) (ADVP (RB often) (. .)))))))
I don't mind how many times you did whatever.
( I ( ( ( do n't ) ( mind ( ( ( how many ) times ) ( you ( did whatever ) ) ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBP do) (RB n't) (VP (VB mind) (SBAR (WHNP (WHADJP (WRB how) (JJ many)) (NNS times)) (S (NP (PRP you)) (VP (VBD did) (S (NP (WDT whatever)))))))) (. .)))