could reboil
Regular verb: reboil - reboiled- reboiled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could reboil
you could reboil
he could reboil
we could reboil
you could reboil
they could reboil 	I could be reboiling
you could be reboiling
he could be reboiling
we could be reboiling
you could be reboiling
they could be reboiling	I could have reboiled
you could have reboiled
he could have reboiled
we could have reboiled
you could have reboiled
they could have reboiled	I could have been reboiling
you could have been reboiling
he could have been reboiling
we could have been reboiling
you could have been reboiling
they could have been reboiling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not reboil
you could not reboil
he could not reboil
we could not reboil
you could not reboil
they could not reboil 	I could not be reboiling
you could not be reboiling
he could not be reboiling
we could not be reboiling
you could not be reboiling
they could not be reboiling	I could not have reboiled
you could not have reboiled
he could not have reboiled
we could not have reboiled
you could not have reboiled
they could not have reboiled	I could not have been reboiling
you could not have been reboiling
he could not have been reboiling
we could not have been reboiling
you could not have been reboiling
they could not have been reboiling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I reboil?
could you reboil?
could he reboil?
could we reboil?
could you reboil?
could they reboil? 	could I be reboiling?
could you be reboiling?
could he be reboiling?
could we be reboiling?
could you be reboiling?
could they be reboiling? 	could I have reboiled?
could you have reboiled?
could he have reboiled?
could we have reboiled?
could you have reboiled?
could they have reboiled? 	could I have been reboiling?
could you have been reboiling?
could he have been reboiling?
could we have been reboiling?
could you have been reboiling?
could they have been reboiling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not reboil?
could you not reboil?
could he not reboil?
could we not reboil?
could you not reboil?
could they not reboil? 	could I not be reboiling?
could you not be reboiling?
could he not be reboiling?
could we not be reboiling?
could you not be reboiling?
could they not be reboiling? 	could I not have reboiled?
could you not have reboiled?
could he not have reboiled?
could we not have reboiled?
could you not have reboiled?
could they not have reboiled? 	could I not have been reboiling?
could you not have been reboiling?
could he not have been reboiling?
could we not have been reboiling?
could you not have been reboiling?
could they not have been reboiling?