should scumble
Regular verb: scumble - scumbled- scumbled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should scumble
you should scumble
she should scumble
we should scumble
you should scumble
they should scumble 	I should be scumbling
you should be scumbling
she should be scumbling
we should be scumbling
you should be scumbling
they should be scumbling	I should have scumbled
you should have scumbled
she should have scumbled
we should have scumbled
you should have scumbled
they should have scumbled	I should have been scumbling
you should have been scumbling
she should have been scumbling
we should have been scumbling
you should have been scumbling
they should have been scumbling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not scumble
you should not scumble
she should not scumble
we should not scumble
you should not scumble
they should not scumble 	I should not be scumbling
you should not be scumbling
she should not be scumbling
we should not be scumbling
you should not be scumbling
they should not be scumbling	I should not have scumbled
you should not have scumbled
she should not have scumbled
we should not have scumbled
you should not have scumbled
they should not have scumbled	I should not have been scumbling
you should not have been scumbling
she should not have been scumbling
we should not have been scumbling
you should not have been scumbling
they should not have been scumbling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I scumble?
should you scumble?
should she scumble?
should we scumble?
should you scumble?
should they scumble? 	should I be scumbling?
should you be scumbling?
should she be scumbling?
should we be scumbling?
should you be scumbling?
should they be scumbling? 	should I have scumbled?
should you have scumbled?
should she have scumbled?
should we have scumbled?
should you have scumbled?
should they have scumbled? 	should I have been scumbling?
should you have been scumbling?
should she have been scumbling?
should we have been scumbling?
should you have been scumbling?
should they have been scumbling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not scumble?
should you not scumble?
should she not scumble?
should we not scumble?
should you not scumble?
should they not scumble? 	should I not be scumbling?
should you not be scumbling?
should she not be scumbling?
should we not be scumbling?
should you not be scumbling?
should they not be scumbling? 	should I not have scumbled?
should you not have scumbled?
should she not have scumbled?
should we not have scumbled?
should you not have scumbled?
should they not have scumbled? 	should I not have been scumbling?
should you not have been scumbling?
should she not have been scumbling?
should we not have been scumbling?
should you not have been scumbling?
should they not have been scumbling?