can caterwaul
Regular verb: caterwaul - caterwauled- caterwauled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can caterwaul
you can caterwaul
she can caterwaul
we can caterwaul
you can caterwaul
they can caterwaul 	I can be caterwauling
you can be caterwauling
she can be caterwauling
we can be caterwauling
you can be caterwauling
they can be caterwauling	I can have caterwauled
you can have caterwauled
she 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
she 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 cannot caterwaul
you cannot caterwaul
she cannot caterwaul
we cannot caterwaul
you cannot caterwaul
they cannot caterwaul 	I cannot be caterwauling
you cannot be caterwauling
she cannot be caterwauling
we cannot be caterwauling
you cannot be caterwauling
they cannot be caterwauling	I cannot have caterwauled
you cannot have caterwauled
she cannot have caterwauled
we cannot have caterwauled
you cannot have caterwauled
they cannot have caterwauled	I cannot have been caterwauling
you cannot have been caterwauling
she cannot have been caterwauling
we cannot have been caterwauling
you cannot have been caterwauling
they cannot have been caterwauling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I caterwaul?
can you caterwaul?
can she caterwaul?
can we caterwaul?
can you caterwaul?
can they caterwaul? 	can I be caterwauling?
can you be caterwauling?
can she be caterwauling?
can we be caterwauling?
can you be caterwauling?
can they be caterwauling? 	can I have caterwauled?
can you have caterwauled?
can she 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 she 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 I not caterwaul?
can you not caterwaul?
can she not caterwaul?
can we not caterwaul?
can you not caterwaul?
can they not caterwaul? 	can I not be caterwauling?
can you not be caterwauling?
can she not be caterwauling?
can we not be caterwauling?
can you not be caterwauling?
can they not be caterwauling? 	can I not have caterwauled?
can you not have caterwauled?
can she not have caterwauled?
can we not have caterwauled?
can you not have caterwauled?
can they not have caterwauled? 	can I not have been caterwauling?
can you not have been caterwauling?
can she not have been caterwauling?
can we not have been caterwauling?
can you not have been caterwauling?
can they not have been caterwauling?