can croon
Verbo regular: croon - crooned- crooned

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can croon
you can croon
he can croon
we can croon
you can croon
they can croon 	I can be crooning
you can be crooning
he can be crooning
we can be crooning
you can be crooning
they can be crooning	I can have crooned
you can have crooned
he can have crooned
we can have crooned
you can have crooned
they can have crooned	I can have been crooning
you can have been crooning
he can have been crooning
we can have been crooning
you can have been crooning
they can have been crooning	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot croon
you cannot croon
he cannot croon
we cannot croon
you cannot croon
they cannot croon 	I cannot be crooning
you cannot be crooning
he cannot be crooning
we cannot be crooning
you cannot be crooning
they cannot be crooning	I cannot have crooned
you cannot have crooned
he cannot have crooned
we cannot have crooned
you cannot have crooned
they cannot have crooned	I cannot have been crooning
you cannot have been crooning
he cannot have been crooning
we cannot have been crooning
you cannot have been crooning
they cannot have been crooning	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I croon?
can you croon?
can he croon?
can we croon?
can you croon?
can they croon? 	can I be crooning?
can you be crooning?
can he be crooning?
can we be crooning?
can you be crooning?
can they be crooning? 	can I have crooned?
can you have crooned?
can he have crooned?
can we have crooned?
can you have crooned?
can they have crooned? 	can I have been crooning?
can you have been crooning?
can he have been crooning?
can we have been crooning?
can you have been crooning?
can they have been crooning? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not croon?
can you not croon?
can he not croon?
can we not croon?
can you not croon?
can they not croon? 	can I not be crooning?
can you not be crooning?
can he not be crooning?
can we not be crooning?
can you not be crooning?
can they not be crooning? 	can I not have crooned?
can you not have crooned?
can he not have crooned?
can we not have crooned?
can you not have crooned?
can they not have crooned? 	can I not have been crooning?
can you not have been crooning?
can he not have been crooning?
can we not have been crooning?
can you not have been crooning?
can they not have been crooning?