Present participle; Past participle - thinning - thinned Present - thin - thin - thins - thin - thin - thin Past - thinned - thinned - thinned - thinned - thinned - thinned Future - will thin - will thin - will thin - will thin - will thin - will thin Present conditional - would thin - would thin - would thin - would thin - would thin - would thin Present Perfect - have thinned - have thinned - has thinned - have thinned - have thinned - have thinned Past Perfect - had thinned - had thinned - had thinned - had thinned - had thinned - had thinned Future Perfect - will have thinned - will have thinned - will have thinned - will have thinned - will have thinned - will have thinned Past conditional - would have thinned - would have thinned - would have thinned - would have thinned - would have thinned - would have thinned Imperative - - - thin - - - - - - - -