could tomb
Verbo regular: tomb - tombed- tombed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could tomb
you could tomb
he could tomb
we could tomb
you could tomb
they could tomb 	I could be tombing
you could be tombing
he could be tombing
we could be tombing
you could be tombing
they could be tombing	I could have tombed
you could have tombed
he could have tombed
we could have tombed
you could have tombed
they could have tombed	I could have been tombing
you could have been tombing
he could have been tombing
we could have been tombing
you could have been tombing
they could have been tombing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not tomb
you could not tomb
he could not tomb
we could not tomb
you could not tomb
they could not tomb 	I could not be tombing
you could not be tombing
he could not be tombing
we could not be tombing
you could not be tombing
they could not be tombing	I could not have tombed
you could not have tombed
he could not have tombed
we could not have tombed
you could not have tombed
they could not have tombed	I could not have been tombing
you could not have been tombing
he could not have been tombing
we could not have been tombing
you could not have been tombing
they could not have been tombing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I tomb?
could you tomb?
could he tomb?
could we tomb?
could you tomb?
could they tomb? 	could I be tombing?
could you be tombing?
could he be tombing?
could we be tombing?
could you be tombing?
could they be tombing? 	could I have tombed?
could you have tombed?
could he have tombed?
could we have tombed?
could you have tombed?
could they have tombed? 	could I have been tombing?
could you have been tombing?
could he have been tombing?
could we have been tombing?
could you have been tombing?
could they have been tombing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not tomb?
could you not tomb?
could he not tomb?
could we not tomb?
could you not tomb?
could they not tomb? 	could I not be tombing?
could you not be tombing?
could he not be tombing?
could we not be tombing?
could you not be tombing?
could they not be tombing? 	could I not have tombed?
could you not have tombed?
could he not have tombed?
could we not have tombed?
could you not have tombed?
could they not have tombed? 	could I not have been tombing?
could you not have been tombing?
could he not have been tombing?
could we not have been tombing?
could you not have been tombing?
could they not have been tombing?