Present participle; Past participle - upholding - upheld Present - uphold - uphold - upholds - uphold - uphold - uphold Past - upheld - upheld - upheld - upheld - upheld - upheld Future - will uphold - will uphold - will uphold - will uphold - will uphold - will uphold Present conditional - would uphold - would uphold - would uphold - would uphold - would uphold - would uphold Present Perfect - have upheld - have upheld - has upheld - have upheld - have upheld - have upheld Past Perfect - had upheld - had upheld - had upheld - had upheld - had upheld - had upheld Future Perfect - will have upheld - will have upheld - will have upheld - will have upheld - will have upheld - will have upheld Past conditional - would have upheld - would have upheld - would have upheld - would have upheld - would have upheld - would have upheld Imperative - - - uphold - - - - - - - -