can prefertilise
Verbo regular: prefertilise - prefertilised- prefertilised

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can prefertilise
you can prefertilise
he can prefertilise
we can prefertilise
you can prefertilise
they can prefertilise 	I can be prefertilising
you can be prefertilising
he can be prefertilising
we can be prefertilising
you can be prefertilising
they can be prefertilising	I can have prefertilised
you can have prefertilised
he can have prefertilised
we can have prefertilised
you can have prefertilised
they can have prefertilised	I can have been prefertilising
you can have been prefertilising
he can have been prefertilising
we can have been prefertilising
you can have been prefertilising
they can have been prefertilising	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot prefertilise
you cannot prefertilise
he cannot prefertilise
we cannot prefertilise
you cannot prefertilise
they cannot prefertilise 	I cannot be prefertilising
you cannot be prefertilising
he cannot be prefertilising
we cannot be prefertilising
you cannot be prefertilising
they cannot be prefertilising	I cannot have prefertilised
you cannot have prefertilised
he cannot have prefertilised
we cannot have prefertilised
you cannot have prefertilised
they cannot have prefertilised	I cannot have been prefertilising
you cannot have been prefertilising
he cannot have been prefertilising
we cannot have been prefertilising
you cannot have been prefertilising
they cannot have been prefertilising	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I prefertilise?
can you prefertilise?
can he prefertilise?
can we prefertilise?
can you prefertilise?
can they prefertilise? 	can I be prefertilising?
can you be prefertilising?
can he be prefertilising?
can we be prefertilising?
can you be prefertilising?
can they be prefertilising? 	can I have prefertilised?
can you have prefertilised?
can he have prefertilised?
can we have prefertilised?
can you have prefertilised?
can they have prefertilised? 	can I have been prefertilising?
can you have been prefertilising?
can he have been prefertilising?
can we have been prefertilising?
can you have been prefertilising?
can they have been prefertilising? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not prefertilise?
can you not prefertilise?
can he not prefertilise?
can we not prefertilise?
can you not prefertilise?
can they not prefertilise? 	can I not be prefertilising?
can you not be prefertilising?
can he not be prefertilising?
can we not be prefertilising?
can you not be prefertilising?
can they not be prefertilising? 	can I not have prefertilised?
can you not have prefertilised?
can he not have prefertilised?
can we not have prefertilised?
can you not have prefertilised?
can they not have prefertilised? 	can I not have been prefertilising?
can you not have been prefertilising?
can he not have been prefertilising?
can we not have been prefertilising?
can you not have been prefertilising?
can they not have been prefertilising?