Present participle; Past participle - adjoining - adjoined Present - adjoin - adjoin - adjoins - adjoin - adjoin - adjoin Past - adjoined - adjoined - adjoined - adjoined - adjoined - adjoined Future - will adjoin - will adjoin - will adjoin - will adjoin - will adjoin - will adjoin Present conditional - would adjoin - would adjoin - would adjoin - would adjoin - would adjoin - would adjoin Present Perfect - have adjoined - have adjoined - has adjoined - have adjoined - have adjoined - have adjoined Past Perfect - had adjoined - had adjoined - had adjoined - had adjoined - had adjoined - had adjoined Future Perfect - will have adjoined - will have adjoined - will have adjoined - will have adjoined - will have adjoined - will have adjoined Past conditional - would have adjoined - would have adjoined - would have adjoined - would have adjoined - would have adjoined - would have adjoined Imperative - - - adjoin - - - - - - - -