could n't really figure out how to flesh either out 
(ROOT (S (VP (MD could) (RB n't) (ADVP (RB really)) (VP (VB figure) (PRT (RP out)) (SBAR (WHADVP (WRB how)) (S (VP (TO to) (VP (VB flesh) (NP (CC either)) (PRT (RB out))))))))))
(ROOT (S (VP (MD ) (RB ) (ADVP (RB )) (VP (VB ) (PRT (RP )) (SBAR (WHADVP (WRB )) (S (VP (TO ) (VP (VB ) (NP (CC )) (PRT (RB ))))))))))