must percolate
Verbo regular: percolate - percolated- percolated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must percolate
you must percolate
he must percolate
we must percolate
you must percolate
they must percolate 	I must be percolating
you must be percolating
he must be percolating
we must be percolating
you must be percolating
they must be percolating	I must have percolated
you must have percolated
he must have percolated
we must have percolated
you must have percolated
they must have percolated	I must have been percolating
you must have been percolating
he must have been percolating
we must have been percolating
you must have been percolating
they must have been percolating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not percolate
you must not percolate
he must not percolate
we must not percolate
you must not percolate
they must not percolate 	I must not be percolating
you must not be percolating
he must not be percolating
we must not be percolating
you must not be percolating
they must not be percolating	I must not have percolated
you must not have percolated
he must not have percolated
we must not have percolated
you must not have percolated
they must not have percolated	I must not have been percolating
you must not have been percolating
he must not have been percolating
we must not have been percolating
you must not have been percolating
they must not have been percolating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I percolate?
must you percolate?
must he percolate?
must we percolate?
must you percolate?
must they percolate? 	must I be percolating?
must you be percolating?
must he be percolating?
must we be percolating?
must you be percolating?
must they be percolating? 	must I have percolated?
must you have percolated?
must he have percolated?
must we have percolated?
must you have percolated?
must they have percolated? 	must I have been percolating?
must you have been percolating?
must he have been percolating?
must we have been percolating?
must you have been percolating?
must they have been percolating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not percolate?
must you not percolate?
must he not percolate?
must we not percolate?
must you not percolate?
must they not percolate? 	must I not be percolating?
must you not be percolating?
must he not be percolating?
must we not be percolating?
must you not be percolating?
must they not be percolating? 	must I not have percolated?
must you not have percolated?
must he not have percolated?
must we not have percolated?
must you not have percolated?
must they not have percolated? 	must I not have been percolating?
must you not have been percolating?
must he not have been percolating?
must we not have been percolating?
must you not have been percolating?
must they not have been percolating?