can caterwaul
Regular verb: caterwaul - caterwauled- caterwauled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can caterwaul
you can caterwaul
he can caterwaul
we can caterwaul
you can caterwaul
they can caterwaul 	I can be caterwauling
you can be caterwauling
he can be caterwauling
we can be caterwauling
you can be caterwauling
they can be caterwauling	I can have caterwauled
you can have caterwauled
he can have caterwauled
we can have caterwauled
you can have caterwauled
they can have caterwauled	I can have been caterwauling
you can have been caterwauling
he can have been caterwauling
we can have been caterwauling
you can have been caterwauling
they can have been caterwauling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't caterwaul
you can't caterwaul
he can't caterwaul
we can't caterwaul
you can't caterwaul
they can't caterwaul 	I can't be caterwauling
you can't be caterwauling
he can't be caterwauling
we can't be caterwauling
you can't be caterwauling
they can't be caterwauling	I can't have caterwauled
you can't have caterwauled
he can't have caterwauled
we can't have caterwauled
you can't have caterwauled
they can't have caterwauled	I can't have been caterwauling
you can't have been caterwauling
he can't have been caterwauling
we can't have been caterwauling
you can't have been caterwauling
they can't have been caterwauling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I caterwaul?
can you caterwaul?
can he caterwaul?
can we caterwaul?
can you caterwaul?
can they caterwaul? 	can I be caterwauling?
can you be caterwauling?
can he be caterwauling?
can we be caterwauling?
can you be caterwauling?
can they be caterwauling? 	can I have caterwauled?
can you have caterwauled?
can he have caterwauled?
can we have caterwauled?
can you have caterwauled?
can they have caterwauled? 	can I have been caterwauling?
can you have been caterwauling?
can he have been caterwauling?
can we have been caterwauling?
can you have been caterwauling?
can they have been caterwauling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I caterwaul?
can't you caterwaul?
can't he caterwaul?
can't we caterwaul?
can't you caterwaul?
can't they caterwaul? 	can't I be caterwauling?
can't you be caterwauling?
can't he be caterwauling?
can't we be caterwauling?
can't you be caterwauling?
can't they be caterwauling? 	can't I have caterwauled?
can't you have caterwauled?
can't he have caterwauled?
can't we have caterwauled?
can't you have caterwauled?
can't they have caterwauled? 	can't I have been caterwauling?
can't you have been caterwauling?
can't he have been caterwauling?
can't we have been caterwauling?
can't you have been caterwauling?
can't they have been caterwauling?