can percolate
Verbo regular: percolate - percolated- percolated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can percolate
you can percolate
she can percolate
we can percolate
you can percolate
they can percolate 	I can be percolating
you can be percolating
she can be percolating
we can be percolating
you can be percolating
they can be percolating	I can have percolated
you can have percolated
she can have percolated
we can have percolated
you can have percolated
they can have percolated	I can have been percolating
you can have been percolating
she can have been percolating
we can have been percolating
you can have been percolating
they can have been percolating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot percolate
you cannot percolate
she cannot percolate
we cannot percolate
you cannot percolate
they cannot percolate 	I cannot be percolating
you cannot be percolating
she cannot be percolating
we cannot be percolating
you cannot be percolating
they cannot be percolating	I cannot have percolated
you cannot have percolated
she cannot have percolated
we cannot have percolated
you cannot have percolated
they cannot have percolated	I cannot have been percolating
you cannot have been percolating
she cannot have been percolating
we cannot have been percolating
you cannot have been percolating
they cannot have been percolating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I percolate?
can you percolate?
can she percolate?
can we percolate?
can you percolate?
can they percolate? 	can I be percolating?
can you be percolating?
can she be percolating?
can we be percolating?
can you be percolating?
can they be percolating? 	can I have percolated?
can you have percolated?
can she have percolated?
can we have percolated?
can you have percolated?
can they have percolated? 	can I have been percolating?
can you have been percolating?
can she have been percolating?
can we have been percolating?
can you have been percolating?
can they have been percolating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not percolate?
can you not percolate?
can she not percolate?
can we not percolate?
can you not percolate?
can they not percolate? 	can I not be percolating?
can you not be percolating?
can she not be percolating?
can we not be percolating?
can you not be percolating?
can they not be percolating? 	can I not have percolated?
can you not have percolated?
can she not have percolated?
can we not have percolated?
can you not have percolated?
can they not have percolated? 	can I not have been percolating?
can you not have been percolating?
can she not have been percolating?
can we not have been percolating?
can you not have been percolating?
can they not have been percolating?