could sermonise
Regular verb: sermonise - sermonised- sermonised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could sermonise
you could sermonise
she could sermonise
we could sermonise
you could sermonise
they could sermonise 	I could be sermonising
you could be sermonising
she could be sermonising
we could be sermonising
you could be sermonising
they could be sermonising	I could have sermonised
you could have sermonised
she could have sermonised
we could have sermonised
you could have sermonised
they could have sermonised	I could have been sermonising
you could have been sermonising
she could have been sermonising
we could have been sermonising
you could have been sermonising
they could have been sermonising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not sermonise
you could not sermonise
she could not sermonise
we could not sermonise
you could not sermonise
they could not sermonise 	I could not be sermonising
you could not be sermonising
she could not be sermonising
we could not be sermonising
you could not be sermonising
they could not be sermonising	I could not have sermonised
you could not have sermonised
she could not have sermonised
we could not have sermonised
you could not have sermonised
they could not have sermonised	I could not have been sermonising
you could not have been sermonising
she could not have been sermonising
we could not have been sermonising
you could not have been sermonising
they could not have been sermonising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I sermonise?
could you sermonise?
could she sermonise?
could we sermonise?
could you sermonise?
could they sermonise? 	could I be sermonising?
could you be sermonising?
could she be sermonising?
could we be sermonising?
could you be sermonising?
could they be sermonising? 	could I have sermonised?
could you have sermonised?
could she have sermonised?
could we have sermonised?
could you have sermonised?
could they have sermonised? 	could I have been sermonising?
could you have been sermonising?
could she have been sermonising?
could we have been sermonising?
could you have been sermonising?
could they have been sermonising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not sermonise?
could you not sermonise?
could she not sermonise?
could we not sermonise?
could you not sermonise?
could they not sermonise? 	could I not be sermonising?
could you not be sermonising?
could she not be sermonising?
could we not be sermonising?
could you not be sermonising?
could they not be sermonising? 	could I not have sermonised?
could you not have sermonised?
could she not have sermonised?
could we not have sermonised?
could you not have sermonised?
could they not have sermonised? 	could I not have been sermonising?
could you not have been sermonising?
could she not have been sermonising?
could we not have been sermonising?
could you not have been sermonising?
could they not have been sermonising?