could tub tub
Verbe régulier : tub tub - tub tubed- tub tubed

, ce verbe peut ne pas exister, la conjugaison est donnée à titre d'exemple.

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could tub tub
you could tub tub
she could tub tub
we could tub tub
you could tub tub
they could tub tub 	I could be tub tubing
you could be tub tubing
she could be tub tubing
we could be tub tubing
you could be tub tubing
they could be tub tubing	I could have tub tubed
you could have tub tubed
she could have tub tubed
we could have tub tubed
you could have tub tubed
they could have tub tubed	I could have been tub tubing
you could have been tub tubing
she could have been tub tubing
we could have been tub tubing
you could have been tub tubing
they could have been tub tubing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not tub tub
you could not tub tub
she could not tub tub
we could not tub tub
you could not tub tub
they could not tub tub 	I could not be tub tubing
you could not be tub tubing
she could not be tub tubing
we could not be tub tubing
you could not be tub tubing
they could not be tub tubing	I could not have tub tubed
you could not have tub tubed
she could not have tub tubed
we could not have tub tubed
you could not have tub tubed
they could not have tub tubed	I could not have been tub tubing
you could not have been tub tubing
she could not have been tub tubing
we could not have been tub tubing
you could not have been tub tubing
they could not have been tub tubing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I tub tub?
could you tub tub?
could she tub tub?
could we tub tub?
could you tub tub?
could they tub tub? 	could I be tub tubing?
could you be tub tubing?
could she be tub tubing?
could we be tub tubing?
could you be tub tubing?
could they be tub tubing? 	could I have tub tubed?
could you have tub tubed?
could she have tub tubed?
could we have tub tubed?
could you have tub tubed?
could they have tub tubed? 	could I have been tub tubing?
could you have been tub tubing?
could she have been tub tubing?
could we have been tub tubing?
could you have been tub tubing?
could they have been tub tubing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not tub tub?
could you not tub tub?
could she not tub tub?
could we not tub tub?
could you not tub tub?
could they not tub tub? 	could I not be tub tubing?
could you not be tub tubing?
could she not be tub tubing?
could we not be tub tubing?
could you not be tub tubing?
could they not be tub tubing? 	could I not have tub tubed?
could you not have tub tubed?
could she not have tub tubed?
could we not have tub tubed?
could you not have tub tubed?
could they not have tub tubed? 	could I not have been tub tubing?
could you not have been tub tubing?
could she not have been tub tubing?
could we not have been tub tubing?
could you not have been tub tubing?
could they not have been tub tubing?