can thumbtack
Verbe régulier : thumbtack - thumbtacked- thumbtacked

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can thumbtack
you can thumbtack
she can thumbtack
we can thumbtack
you can thumbtack
they can thumbtack 	I can be thumbtacking
you can be thumbtacking
she can be thumbtacking
we can be thumbtacking
you can be thumbtacking
they can be thumbtacking	I can have thumbtacked
you can have thumbtacked
she can have thumbtacked
we can have thumbtacked
you can have thumbtacked
they can have thumbtacked	I can have been thumbtacking
you can have been thumbtacking
she can have been thumbtacking
we can have been thumbtacking
you can have been thumbtacking
they can have been thumbtacking	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I cannot thumbtack
you cannot thumbtack
she cannot thumbtack
we cannot thumbtack
you cannot thumbtack
they cannot thumbtack 	I cannot be thumbtacking
you cannot be thumbtacking
she cannot be thumbtacking
we cannot be thumbtacking
you cannot be thumbtacking
they cannot be thumbtacking	I cannot have thumbtacked
you cannot have thumbtacked
she cannot have thumbtacked
we cannot have thumbtacked
you cannot have thumbtacked
they cannot have thumbtacked	I cannot have been thumbtacking
you cannot have been thumbtacking
she cannot have been thumbtacking
we cannot have been thumbtacking
you cannot have been thumbtacking
they cannot have been thumbtacking	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I thumbtack?
can you thumbtack?
can she thumbtack?
can we thumbtack?
can you thumbtack?
can they thumbtack? 	can I be thumbtacking?
can you be thumbtacking?
can she be thumbtacking?
can we be thumbtacking?
can you be thumbtacking?
can they be thumbtacking? 	can I have thumbtacked?
can you have thumbtacked?
can she have thumbtacked?
can we have thumbtacked?
can you have thumbtacked?
can they have thumbtacked? 	can I have been thumbtacking?
can you have been thumbtacking?
can she have been thumbtacking?
can we have been thumbtacking?
can you have been thumbtacking?
can they have been thumbtacking? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I not thumbtack?
can you not thumbtack?
can she not thumbtack?
can we not thumbtack?
can you not thumbtack?
can they not thumbtack? 	can I not be thumbtacking?
can you not be thumbtacking?
can she not be thumbtacking?
can we not be thumbtacking?
can you not be thumbtacking?
can they not be thumbtacking? 	can I not have thumbtacked?
can you not have thumbtacked?
can she not have thumbtacked?
can we not have thumbtacked?
can you not have thumbtacked?
can they not have thumbtacked? 	can I not have been thumbtacking?
can you not have been thumbtacking?
can she not have been thumbtacking?
can we not have been thumbtacking?
can you not have been thumbtacking?
can they not have been thumbtacking?