can toil
Regular verb: toil - toiled- toiled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can toil
you can toil
he can toil
we can toil
you can toil
they can toil 	I can be toiling
you can be toiling
he can be toiling
we can be toiling
you can be toiling
they can be toiling	I can have toiled
you can have toiled
he 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
he 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 can't toil
you can't toil
he can't toil
we can't toil
you can't toil
they can't toil 	I can't be toiling
you can't be toiling
he can't be toiling
we can't be toiling
you can't be toiling
they can't be toiling	I can't have toiled
you can't have toiled
he can't have toiled
we can't have toiled
you can't have toiled
they can't have toiled	I can't have been toiling
you can't have been toiling
he can't have been toiling
we can't have been toiling
you can't have been toiling
they can't have been toiling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I toil?
can you toil?
can he toil?
can we toil?
can you toil?
can they toil? 	can I be toiling?
can you be toiling?
can he be toiling?
can we be toiling?
can you be toiling?
can they be toiling? 	can I have toiled?
can you have toiled?
can he 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 he 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't I toil?
can't you toil?
can't he toil?
can't we toil?
can't you toil?
can't they toil? 	can't I be toiling?
can't you be toiling?
can't he be toiling?
can't we be toiling?
can't you be toiling?
can't they be toiling? 	can't I have toiled?
can't you have toiled?
can't he have toiled?
can't we have toiled?
can't you have toiled?
can't they have toiled? 	can't I have been toiling?
can't you have been toiling?
can't he have been toiling?
can't we have been toiling?
can't you have been toiling?
can't they have been toiling?