could tomb
Verbe régulier : tomb - tombed- tombed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could tomb
you could tomb
she could tomb
we could tomb
you could tomb
they could tomb 	I could be tombing
you could be tombing
she could be tombing
we could be tombing
you could be tombing
they could be tombing	I could have tombed
you could have tombed
she 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
she could have been tombing
we could have been tombing
you could have been tombing
they could have been tombing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not tomb
you could not tomb
she 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
she 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
she 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
she could not have been tombing
we could not have been tombing
you could not have been tombing
they could not have been tombing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I tomb?
could you tomb?
could she tomb?
could we tomb?
could you tomb?
could they tomb? 	could I be tombing?
could you be tombing?
could she be tombing?
could we be tombing?
could you be tombing?
could they be tombing? 	could I have tombed?
could you have tombed?
could she 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 she have been tombing?
could we have been tombing?
could you have been tombing?
could they have been tombing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not tomb?
could you not tomb?
could she 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 she 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 she 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 she not have been tombing?
could we not have been tombing?
could you not have been tombing?
could they not have been tombing?