should snowplow
Regular verb: snowplow - snowplowed- snowplowed

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't snowplow
you shouldn't snowplow
she shouldn't snowplow
we shouldn't snowplow
you shouldn't snowplow
they shouldn't snowplow 	I shouldn't be snowplowing
you shouldn't be snowplowing
she shouldn't be snowplowing
we shouldn't be snowplowing
you shouldn't be snowplowing
they shouldn't be snowplowing	I shouldn't have snowplowed
you shouldn't have snowplowed
she shouldn't have snowplowed
we shouldn't have snowplowed
you shouldn't have snowplowed
they shouldn't have snowplowed	I shouldn't have been snowplowing
you shouldn't have been snowplowing
she shouldn't have been snowplowing
we shouldn't have been snowplowing
you shouldn't have been snowplowing
they shouldn't 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 	
shouldn't I snowplow?
shouldn't you snowplow?
shouldn't she snowplow?
shouldn't we snowplow?
shouldn't you snowplow?
shouldn't they snowplow? 	shouldn't I be snowplowing?
shouldn't you be snowplowing?
shouldn't she be snowplowing?
shouldn't we be snowplowing?
shouldn't you be snowplowing?
shouldn't they be snowplowing? 	shouldn't I have snowplowed?
shouldn't you have snowplowed?
shouldn't she have snowplowed?
shouldn't we have snowplowed?
shouldn't you have snowplowed?
shouldn't they have snowplowed? 	shouldn't I have been snowplowing?
shouldn't you have been snowplowing?
shouldn't she have been snowplowing?
shouldn't we have been snowplowing?
shouldn't you have been snowplowing?
shouldn't they have been snowplowing?