should trek
Verbo regular: trek - trekked- trekked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should trek
you should trek
he should trek
we should trek
you should trek
they should trek 	I should be trekking
you should be trekking
he should be trekking
we should be trekking
you should be trekking
they should be trekking	I should have trekked
you should have trekked
he should have trekked
we should have trekked
you should have trekked
they should have trekked	I should have been trekking
you should have been trekking
he should have been trekking
we should have been trekking
you should have been trekking
they should have been trekking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should not trek
you should not trek
he should not trek
we should not trek
you should not trek
they should not trek 	I should not be trekking
you should not be trekking
he should not be trekking
we should not be trekking
you should not be trekking
they should not be trekking	I should not have trekked
you should not have trekked
he should not have trekked
we should not have trekked
you should not have trekked
they should not have trekked	I should not have been trekking
you should not have been trekking
he should not have been trekking
we should not have been trekking
you should not have been trekking
they should not have been trekking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I trek?
should you trek?
should he trek?
should we trek?
should you trek?
should they trek? 	should I be trekking?
should you be trekking?
should he be trekking?
should we be trekking?
should you be trekking?
should they be trekking? 	should I have trekked?
should you have trekked?
should he have trekked?
should we have trekked?
should you have trekked?
should they have trekked? 	should I have been trekking?
should you have been trekking?
should he have been trekking?
should we have been trekking?
should you have been trekking?
should they have been trekking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I not trek?
should you not trek?
should he not trek?
should we not trek?
should you not trek?
should they not trek? 	should I not be trekking?
should you not be trekking?
should he not be trekking?
should we not be trekking?
should you not be trekking?
should they not be trekking? 	should I not have trekked?
should you not have trekked?
should he not have trekked?
should we not have trekked?
should you not have trekked?
should they not have trekked? 	should I not have been trekking?
should you not have been trekking?
should he not have been trekking?
should we not have been trekking?
should you not have been trekking?
should they not have been trekking?