could sulfonate
Verbo regolare: sulfonate - sulfonated- sulfonated

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could sulfonate
you could sulfonate
he could sulfonate
we could sulfonate
you could sulfonate
they could sulfonate 	I could be sulfonating
you could be sulfonating
he could be sulfonating
we could be sulfonating
you could be sulfonating
they could be sulfonating	I could have sulfonated
you could have sulfonated
he could have sulfonated
we could have sulfonated
you could have sulfonated
they could have sulfonated	I could have been sulfonating
you could have been sulfonating
he could have been sulfonating
we could have been sulfonating
you could have been sulfonating
they could have been sulfonating	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could not sulfonate
you could not sulfonate
he could not sulfonate
we could not sulfonate
you could not sulfonate
they could not sulfonate 	I could not be sulfonating
you could not be sulfonating
he could not be sulfonating
we could not be sulfonating
you could not be sulfonating
they could not be sulfonating	I could not have sulfonated
you could not have sulfonated
he could not have sulfonated
we could not have sulfonated
you could not have sulfonated
they could not have sulfonated	I could not have been sulfonating
you could not have been sulfonating
he could not have been sulfonating
we could not have been sulfonating
you could not have been sulfonating
they could not have been sulfonating	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I sulfonate?
could you sulfonate?
could he sulfonate?
could we sulfonate?
could you sulfonate?
could they sulfonate? 	could I be sulfonating?
could you be sulfonating?
could he be sulfonating?
could we be sulfonating?
could you be sulfonating?
could they be sulfonating? 	could I have sulfonated?
could you have sulfonated?
could he have sulfonated?
could we have sulfonated?
could you have sulfonated?
could they have sulfonated? 	could I have been sulfonating?
could you have been sulfonating?
could he have been sulfonating?
could we have been sulfonating?
could you have been sulfonating?
could they have been sulfonating? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I not sulfonate?
could you not sulfonate?
could he not sulfonate?
could we not sulfonate?
could you not sulfonate?
could they not sulfonate? 	could I not be sulfonating?
could you not be sulfonating?
could he not be sulfonating?
could we not be sulfonating?
could you not be sulfonating?
could they not be sulfonating? 	could I not have sulfonated?
could you not have sulfonated?
could he not have sulfonated?
could we not have sulfonated?
could you not have sulfonated?
could they not have sulfonated? 	could I not have been sulfonating?
could you not have been sulfonating?
could he not have been sulfonating?
could we not have been sulfonating?
could you not have been sulfonating?
could they not have been sulfonating?