should collaborate
Verbo regular: collaborate - collaborated- collaborated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should collaborate
you should collaborate
he should collaborate
we should collaborate
you should collaborate
they should collaborate 	I should be collaborating
you should be collaborating
he should be collaborating
we should be collaborating
you should be collaborating
they should be collaborating	I should have collaborated
you should have collaborated
he should have collaborated
we should have collaborated
you should have collaborated
they should have collaborated	I should have been collaborating
you should have been collaborating
he should have been collaborating
we should have been collaborating
you should have been collaborating
they should have been collaborating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not collaborate
you should not collaborate
he should not collaborate
we should not collaborate
you should not collaborate
they should not collaborate 	I should not be collaborating
you should not be collaborating
he should not be collaborating
we should not be collaborating
you should not be collaborating
they should not be collaborating	I should not have collaborated
you should not have collaborated
he should not have collaborated
we should not have collaborated
you should not have collaborated
they should not have collaborated	I should not have been collaborating
you should not have been collaborating
he should not have been collaborating
we should not have been collaborating
you should not have been collaborating
they should not have been collaborating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I collaborate?
should you collaborate?
should he collaborate?
should we collaborate?
should you collaborate?
should they collaborate? 	should I be collaborating?
should you be collaborating?
should he be collaborating?
should we be collaborating?
should you be collaborating?
should they be collaborating? 	should I have collaborated?
should you have collaborated?
should he have collaborated?
should we have collaborated?
should you have collaborated?
should they have collaborated? 	should I have been collaborating?
should you have been collaborating?
should he have been collaborating?
should we have been collaborating?
should you have been collaborating?
should they have been collaborating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not collaborate?
should you not collaborate?
should he not collaborate?
should we not collaborate?
should you not collaborate?
should they not collaborate? 	should I not be collaborating?
should you not be collaborating?
should he not be collaborating?
should we not be collaborating?
should you not be collaborating?
should they not be collaborating? 	should I not have collaborated?
should you not have collaborated?
should he not have collaborated?
should we not have collaborated?
should you not have collaborated?
should they not have collaborated? 	should I not have been collaborating?
should you not have been collaborating?
should he not have been collaborating?
should we not have been collaborating?
should you not have been collaborating?
should they not have been collaborating?