a moving , if uneven , success 
(ROOT (FRAG (NP (DT a) (NN moving)) (, ,) (SBAR (IN if) (FRAG (ADJP (JJ uneven)))) (, ,) (NN success)))
(ROOT (FRAG (NP (DT ) (NN )) (, ) (SBAR (IN ) (FRAG (ADJP (JJ )))) (, ) (NN )))