can cuckoo
Regular verb: cuckoo - cuckooed- cuckooed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can cuckoo
you can cuckoo
he can cuckoo
we can cuckoo
you can cuckoo
they can cuckoo 	I can be cuckooing
you can be cuckooing
he can be cuckooing
we can be cuckooing
you can be cuckooing
they can be cuckooing	I can have cuckooed
you can have cuckooed
he can have cuckooed
we can have cuckooed
you can have cuckooed
they can have cuckooed	I can have been cuckooing
you can have been cuckooing
he can have been cuckooing
we can have been cuckooing
you can have been cuckooing
they can have been cuckooing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't cuckoo
you can't cuckoo
he can't cuckoo
we can't cuckoo
you can't cuckoo
they can't cuckoo 	I can't be cuckooing
you can't be cuckooing
he can't be cuckooing
we can't be cuckooing
you can't be cuckooing
they can't be cuckooing	I can't have cuckooed
you can't have cuckooed
he can't have cuckooed
we can't have cuckooed
you can't have cuckooed
they can't have cuckooed	I can't have been cuckooing
you can't have been cuckooing
he can't have been cuckooing
we can't have been cuckooing
you can't have been cuckooing
they can't have been cuckooing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I cuckoo?
can you cuckoo?
can he cuckoo?
can we cuckoo?
can you cuckoo?
can they cuckoo? 	can I be cuckooing?
can you be cuckooing?
can he be cuckooing?
can we be cuckooing?
can you be cuckooing?
can they be cuckooing? 	can I have cuckooed?
can you have cuckooed?
can he have cuckooed?
can we have cuckooed?
can you have cuckooed?
can they have cuckooed? 	can I have been cuckooing?
can you have been cuckooing?
can he have been cuckooing?
can we have been cuckooing?
can you have been cuckooing?
can they have been cuckooing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I cuckoo?
can't you cuckoo?
can't he cuckoo?
can't we cuckoo?
can't you cuckoo?
can't they cuckoo? 	can't I be cuckooing?
can't you be cuckooing?
can't he be cuckooing?
can't we be cuckooing?
can't you be cuckooing?
can't they be cuckooing? 	can't I have cuckooed?
can't you have cuckooed?
can't he have cuckooed?
can't we have cuckooed?
can't you have cuckooed?
can't they have cuckooed? 	can't I have been cuckooing?
can't you have been cuckooing?
can't he have been cuckooing?
can't we have been cuckooing?
can't you have been cuckooing?
can't they have been cuckooing?