can toil
Regular verb: toil - toiled- toiled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can toil
you can toil
she can toil
we can toil
you can toil
they can toil 	I can be toiling
you can be toiling
she can be toiling
we can be toiling
you can be toiling
they can be toiling	I can have toiled
you can have toiled
she can have toiled
we can have toiled
you can have toiled
they can have toiled	I can have been toiling
you can have been toiling
she can have been toiling
we can have been toiling
you can have been toiling
they can have been toiling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot toil
you cannot toil
she cannot toil
we cannot toil
you cannot toil
they cannot toil 	I cannot be toiling
you cannot be toiling
she cannot be toiling
we cannot be toiling
you cannot be toiling
they cannot be toiling	I cannot have toiled
you cannot have toiled
she cannot have toiled
we cannot have toiled
you cannot have toiled
they cannot have toiled	I cannot have been toiling
you cannot have been toiling
she cannot have been toiling
we cannot have been toiling
you cannot have been toiling
they cannot have been toiling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I toil?
can you toil?
can she toil?
can we toil?
can you toil?
can they toil? 	can I be toiling?
can you be toiling?
can she be toiling?
can we be toiling?
can you be toiling?
can they be toiling? 	can I have toiled?
can you have toiled?
can she have toiled?
can we have toiled?
can you have toiled?
can they have toiled? 	can I have been toiling?
can you have been toiling?
can she have been toiling?
can we have been toiling?
can you have been toiling?
can they have been toiling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not toil?
can you not toil?
can she not toil?
can we not toil?
can you not toil?
can they not toil? 	can I not be toiling?
can you not be toiling?
can she not be toiling?
can we not be toiling?
can you not be toiling?
can they not be toiling? 	can I not have toiled?
can you not have toiled?
can she not have toiled?
can we not have toiled?
can you not have toiled?
can they not have toiled? 	can I not have been toiling?
can you not have been toiling?
can she not have been toiling?
can we not have been toiling?
can you not have been toiling?
can they not have been toiling?