Present participle; Past participle - tracing - traced Present - trace - trace - traces - trace - trace - trace Past - traced - traced - traced - traced - traced - traced Future - will trace - will trace - will trace - will trace - will trace - will trace Present conditional - would trace - would trace - would trace - would trace - would trace - would trace Present Perfect - have traced - have traced - has traced - have traced - have traced - have traced Past Perfect - had traced - had traced - had traced - had traced - had traced - had traced Future Perfect - will have traced - will have traced - will have traced - will have traced - will have traced - will have traced Past conditional - would have traced - would have traced - would have traced - would have traced - would have traced - would have traced Imperative - - - trace - - - - - - - -