should underprop
Verbe régulier : underprop - underproped- underproped

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I should underprop
you should underprop
she should underprop
we should underprop
you should underprop
they should underprop 	I should be underproping
you should be underproping
she should be underproping
we should be underproping
you should be underproping
they should be underproping	I should have underproped
you should have underproped
she should have underproped
we should have underproped
you should have underproped
they should have underproped	I should have been underproping
you should have been underproping
she should have been underproping
we should have been underproping
you should have been underproping
they should have been underproping	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I should not underprop
you should not underprop
she should not underprop
we should not underprop
you should not underprop
they should not underprop 	I should not be underproping
you should not be underproping
she should not be underproping
we should not be underproping
you should not be underproping
they should not be underproping	I should not have underproped
you should not have underproped
she should not have underproped
we should not have underproped
you should not have underproped
they should not have underproped	I should not have been underproping
you should not have been underproping
she should not have been underproping
we should not have been underproping
you should not have been underproping
they should not have been underproping	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
should I underprop?
should you underprop?
should she underprop?
should we underprop?
should you underprop?
should they underprop? 	should I be underproping?
should you be underproping?
should she be underproping?
should we be underproping?
should you be underproping?
should they be underproping? 	should I have underproped?
should you have underproped?
should she have underproped?
should we have underproped?
should you have underproped?
should they have underproped? 	should I have been underproping?
should you have been underproping?
should she have been underproping?
should we have been underproping?
should you have been underproping?
should they have been underproping? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
should I not underprop?
should you not underprop?
should she not underprop?
should we not underprop?
should you not underprop?
should they not underprop? 	should I not be underproping?
should you not be underproping?
should she not be underproping?
should we not be underproping?
should you not be underproping?
should they not be underproping? 	should I not have underproped?
should you not have underproped?
should she not have underproped?
should we not have underproped?
should you not have underproped?
should they not have underproped? 	should I not have been underproping?
should you not have been underproping?
should she not have been underproping?
should we not have been underproping?
should you not have been underproping?
should they not have been underproping?