should snowplow
Regular verb: snowplow - snowplowed- snowplowed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should snowplow
you should snowplow
she should snowplow
we should snowplow
you should snowplow
they should snowplow 	I should be snowplowing
you should be snowplowing
she should be snowplowing
we should be snowplowing
you should be snowplowing
they should be snowplowing	I should have snowplowed
you should have snowplowed
she should have snowplowed
we should have snowplowed
you should have snowplowed
they should have snowplowed	I should have been snowplowing
you should have been snowplowing
she should have been snowplowing
we should have been snowplowing
you should have been snowplowing
they should have been snowplowing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not snowplow
you should not snowplow
she should not snowplow
we should not snowplow
you should not snowplow
they should not snowplow 	I should not be snowplowing
you should not be snowplowing
she should not be snowplowing
we should not be snowplowing
you should not be snowplowing
they should not be snowplowing	I should not have snowplowed
you should not have snowplowed
she should not have snowplowed
we should not have snowplowed
you should not have snowplowed
they should not have snowplowed	I should not have been snowplowing
you should not have been snowplowing
she should not have been snowplowing
we should not have been snowplowing
you should not have been snowplowing
they should not have been snowplowing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I snowplow?
should you snowplow?
should she snowplow?
should we snowplow?
should you snowplow?
should they snowplow? 	should I be snowplowing?
should you be snowplowing?
should she be snowplowing?
should we be snowplowing?
should you be snowplowing?
should they be snowplowing? 	should I have snowplowed?
should you have snowplowed?
should she have snowplowed?
should we have snowplowed?
should you have snowplowed?
should they have snowplowed? 	should I have been snowplowing?
should you have been snowplowing?
should she have been snowplowing?
should we have been snowplowing?
should you have been snowplowing?
should they have been snowplowing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not snowplow?
should you not snowplow?
should she not snowplow?
should we not snowplow?
should you not snowplow?
should they not snowplow? 	should I not be snowplowing?
should you not be snowplowing?
should she not be snowplowing?
should we not be snowplowing?
should you not be snowplowing?
should they not be snowplowing? 	should I not have snowplowed?
should you not have snowplowed?
should she not have snowplowed?
should we not have snowplowed?
should you not have snowplowed?
should they not have snowplowed? 	should I not have been snowplowing?
should you not have been snowplowing?
should she not have been snowplowing?
should we not have been snowplowing?
should you not have been snowplowing?
should they not have been snowplowing?