should collect
Regular verb: collect - collected- collected

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd collect
you'd collect
she'd collect
we'd collect
you'd collect
they'd collect 	I'd be collecting
you'd be collecting
she'd be collecting
we'd be collecting
you'd be collecting
they'd be collecting	I should've collected
you should've collected
she should've collected
we should've collected
you should've collected
they should've collected	I should've been collecting
you should've been collecting
she should've been collecting
we should've been collecting
you should've been collecting
they should've been collecting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't collect
you shouldn't collect
she shouldn't collect
we shouldn't collect
you shouldn't collect
they shouldn't collect 	I shouldn't be collecting
you shouldn't be collecting
she shouldn't be collecting
we shouldn't be collecting
you shouldn't be collecting
they shouldn't be collecting	I shouldn't have collected
you shouldn't have collected
she shouldn't have collected
we shouldn't have collected
you shouldn't have collected
they shouldn't have collected	I shouldn't have been collecting
you shouldn't have been collecting
she shouldn't have been collecting
we shouldn't have been collecting
you shouldn't have been collecting
they shouldn't have been collecting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I collect?
should you collect?
should she collect?
should we collect?
should you collect?
should they collect? 	should I be collecting?
should you be collecting?
should she be collecting?
should we be collecting?
should you be collecting?
should they be collecting? 	should I have collected?
should you have collected?
should she have collected?
should we have collected?
should you have collected?
should they have collected? 	should I have been collecting?
should you have been collecting?
should she have been collecting?
should we have been collecting?
should you have been collecting?
should they have been collecting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I collect?
shouldn't you collect?
shouldn't she collect?
shouldn't we collect?
shouldn't you collect?
shouldn't they collect? 	shouldn't I be collecting?
shouldn't you be collecting?
shouldn't she be collecting?
shouldn't we be collecting?
shouldn't you be collecting?
shouldn't they be collecting? 	shouldn't I have collected?
shouldn't you have collected?
shouldn't she have collected?
shouldn't we have collected?
shouldn't you have collected?
shouldn't they have collected? 	shouldn't I have been collecting?
shouldn't you have been collecting?
shouldn't she have been collecting?
shouldn't we have been collecting?
shouldn't you have been collecting?
shouldn't they have been collecting?