could luteinise
Regular verb: luteinise - luteinised- luteinised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could luteinise
you could luteinise
he could luteinise
we could luteinise
you could luteinise
they could luteinise 	I could be luteinising
you could be luteinising
he could be luteinising
we could be luteinising
you could be luteinising
they could be luteinising	I could have luteinised
you could have luteinised
he could have luteinised
we could have luteinised
you could have luteinised
they could have luteinised	I could have been luteinising
you could have been luteinising
he could have been luteinising
we could have been luteinising
you could have been luteinising
they could have been luteinising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't luteinise
you couldn't luteinise
he couldn't luteinise
we couldn't luteinise
you couldn't luteinise
they couldn't luteinise 	I couldn't be luteinising
you couldn't be luteinising
he couldn't be luteinising
we couldn't be luteinising
you couldn't be luteinising
they couldn't be luteinising	I couldn't have luteinised
you couldn't have luteinised
he couldn't have luteinised
we couldn't have luteinised
you couldn't have luteinised
they couldn't have luteinised	I couldn't have been luteinising
you couldn't have been luteinising
he couldn't have been luteinising
we couldn't have been luteinising
you couldn't have been luteinising
they couldn't have been luteinising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I luteinise?
could you luteinise?
could he luteinise?
could we luteinise?
could you luteinise?
could they luteinise? 	could I be luteinising?
could you be luteinising?
could he be luteinising?
could we be luteinising?
could you be luteinising?
could they be luteinising? 	could I have luteinised?
could you have luteinised?
could he have luteinised?
could we have luteinised?
could you have luteinised?
could they have luteinised? 	could I have been luteinising?
could you have been luteinising?
could he have been luteinising?
could we have been luteinising?
could you have been luteinising?
could they have been luteinising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I luteinise?
couldn't you luteinise?
couldn't he luteinise?
couldn't we luteinise?
couldn't you luteinise?
couldn't they luteinise? 	couldn't I be luteinising?
couldn't you be luteinising?
couldn't he be luteinising?
couldn't we be luteinising?
couldn't you be luteinising?
couldn't they be luteinising? 	couldn't I have luteinised?
couldn't you have luteinised?
couldn't he have luteinised?
couldn't we have luteinised?
couldn't you have luteinised?
couldn't they have luteinised? 	couldn't I have been luteinising?
couldn't you have been luteinising?
couldn't he have been luteinising?
couldn't we have been luteinising?
couldn't you have been luteinising?
couldn't they have been luteinising?