can toll
Regular verb: toll - tolled- tolled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can toll
you can toll
she can toll
we can toll
you can toll
they can toll 	I can be tolling
you can be tolling
she can be tolling
we can be tolling
you can be tolling
they can be tolling	I can have tolled
you can have tolled
she can have tolled
we can have tolled
you can have tolled
they can have tolled	I can have been tolling
you can have been tolling
she can have been tolling
we can have been tolling
you can have been tolling
they can have been tolling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot toll
you cannot toll
she cannot toll
we cannot toll
you cannot toll
they cannot toll 	I cannot be tolling
you cannot be tolling
she cannot be tolling
we cannot be tolling
you cannot be tolling
they cannot be tolling	I cannot have tolled
you cannot have tolled
she cannot have tolled
we cannot have tolled
you cannot have tolled
they cannot have tolled	I cannot have been tolling
you cannot have been tolling
she cannot have been tolling
we cannot have been tolling
you cannot have been tolling
they cannot have been tolling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I toll?
can you toll?
can she toll?
can we toll?
can you toll?
can they toll? 	can I be tolling?
can you be tolling?
can she be tolling?
can we be tolling?
can you be tolling?
can they be tolling? 	can I have tolled?
can you have tolled?
can she have tolled?
can we have tolled?
can you have tolled?
can they have tolled? 	can I have been tolling?
can you have been tolling?
can she have been tolling?
can we have been tolling?
can you have been tolling?
can they have been tolling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not toll?
can you not toll?
can she not toll?
can we not toll?
can you not toll?
can they not toll? 	can I not be tolling?
can you not be tolling?
can she not be tolling?
can we not be tolling?
can you not be tolling?
can they not be tolling? 	can I not have tolled?
can you not have tolled?
can she not have tolled?
can we not have tolled?
can you not have tolled?
can they not have tolled? 	can I not have been tolling?
can you not have been tolling?
can she not have been tolling?
can we not have been tolling?
can you not have been tolling?
can they not have been tolling?