can cavern
Verbo regular: cavern - caverned- caverned

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can cavern
you can cavern
she can cavern
we can cavern
you can cavern
they can cavern 	I can be caverning
you can be caverning
she can be caverning
we can be caverning
you can be caverning
they can be caverning	I can have caverned
you can have caverned
she can have caverned
we can have caverned
you can have caverned
they can have caverned	I can have been caverning
you can have been caverning
she can have been caverning
we can have been caverning
you can have been caverning
they can have been caverning	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot cavern
you cannot cavern
she cannot cavern
we cannot cavern
you cannot cavern
they cannot cavern 	I cannot be caverning
you cannot be caverning
she cannot be caverning
we cannot be caverning
you cannot be caverning
they cannot be caverning	I cannot have caverned
you cannot have caverned
she cannot have caverned
we cannot have caverned
you cannot have caverned
they cannot have caverned	I cannot have been caverning
you cannot have been caverning
she cannot have been caverning
we cannot have been caverning
you cannot have been caverning
they cannot have been caverning	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I cavern?
can you cavern?
can she cavern?
can we cavern?
can you cavern?
can they cavern? 	can I be caverning?
can you be caverning?
can she be caverning?
can we be caverning?
can you be caverning?
can they be caverning? 	can I have caverned?
can you have caverned?
can she have caverned?
can we have caverned?
can you have caverned?
can they have caverned? 	can I have been caverning?
can you have been caverning?
can she have been caverning?
can we have been caverning?
can you have been caverning?
can they have been caverning? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not cavern?
can you not cavern?
can she not cavern?
can we not cavern?
can you not cavern?
can they not cavern? 	can I not be caverning?
can you not be caverning?
can she not be caverning?
can we not be caverning?
can you not be caverning?
can they not be caverning? 	can I not have caverned?
can you not have caverned?
can she not have caverned?
can we not have caverned?
can you not have caverned?
can they not have caverned? 	can I not have been caverning?
can you not have been caverning?
can she not have been caverning?
can we not have been caverning?
can you not have been caverning?
can they not have been caverning?