ought to cross-fertilise
Regular verb: cross-fertilise - cross-fertilised- cross-fertilised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to cross-fertilise
you ought to cross-fertilise
he ought to cross-fertilise
we ought to cross-fertilise
you ought to cross-fertilise
they ought to cross-fertilise 	I ought to be cross-fertilising
you ought to be cross-fertilising
he ought to be cross-fertilising
we ought to be cross-fertilising
you ought to be cross-fertilising
they ought to be cross-fertilising	I ought to have cross-fertilised
you ought to have cross-fertilised
he ought to have cross-fertilised
we ought to have cross-fertilised
you ought to have cross-fertilised
they ought to have cross-fertilised	I ought to have been cross-fertilising
you ought to have been cross-fertilising
he ought to have been cross-fertilising
we ought to have been cross-fertilising
you ought to have been cross-fertilising
they ought to have been cross-fertilising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to cross-fertilise
you oughtn't to cross-fertilise
he oughtn't to cross-fertilise
we oughtn't to cross-fertilise
you oughtn't to cross-fertilise
they oughtn't to cross-fertilise 	I oughtn't to be cross-fertilising
you oughtn't to be cross-fertilising
he oughtn't to be cross-fertilising
we oughtn't to be cross-fertilising
you oughtn't to be cross-fertilising
they oughtn't to be cross-fertilising	I oughtn't to have cross-fertilised
you oughtn't to have cross-fertilised
he oughtn't to have cross-fertilised
we oughtn't to have cross-fertilised
you oughtn't to have cross-fertilised
they oughtn't to have cross-fertilised	I oughtn't to have been cross-fertilising
you oughtn't to have been cross-fertilising
he oughtn't to have been cross-fertilising
we oughtn't to have been cross-fertilising
you oughtn't to have been cross-fertilising
they oughtn't to have been cross-fertilising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I cross-fertilise?
ought to you cross-fertilise?
ought to he cross-fertilise?
ought to we cross-fertilise?
ought to you cross-fertilise?
ought to they cross-fertilise? 	ought to I be cross-fertilising?
ought to you be cross-fertilising?
ought to he be cross-fertilising?
ought to we be cross-fertilising?
ought to you be cross-fertilising?
ought to they be cross-fertilising? 	ought to I have cross-fertilised?
ought to you have cross-fertilised?
ought to he have cross-fertilised?
ought to we have cross-fertilised?
ought to you have cross-fertilised?
ought to they have cross-fertilised? 	ought to I have been cross-fertilising?
ought to you have been cross-fertilising?
ought to he have been cross-fertilising?
ought to we have been cross-fertilising?
ought to you have been cross-fertilising?
ought to they have been cross-fertilising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to cross-fertilise?
oughtn't you to cross-fertilise?
oughtn't he to cross-fertilise?
oughtn't we to cross-fertilise?
oughtn't you to cross-fertilise?
oughtn't they to cross-fertilise? 	oughtn't I to be cross-fertilising?
oughtn't you to be cross-fertilising?
oughtn't he to be cross-fertilising?
oughtn't we to be cross-fertilising?
oughtn't you to be cross-fertilising?
oughtn't they to be cross-fertilising? 	oughtn't I to have cross-fertilised?
oughtn't you to have cross-fertilised?
oughtn't he to have cross-fertilised?
oughtn't we to have cross-fertilised?
oughtn't you to have cross-fertilised?
oughtn't they to have cross-fertilised? 	oughtn't I to have been cross-fertilising?
oughtn't you to have been cross-fertilising?
oughtn't he to have been cross-fertilising?
oughtn't we to have been cross-fertilising?
oughtn't you to have been cross-fertilising?
oughtn't they to have been cross-fertilising?