English verb conjugation
CAN TOIL

Regular verb: toil - toiled - toiled

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?