Tiempos para rival Present participle:
rival(l)ing
Present:
rival (3.person: rivals)
Past:
rival(l)ed
Future:
will rival
Present conditional:
would rival
Present Perfect:
have rival(l)ed (3.person: has rival(l)ed)
Past Perfect:
had rival(l)ed
Future Perfect:
will have rival(l)ed
Past conditional:
would have rival(l)ed