English verb conjugation
CAN TOUR

Regular verb: tour - toured - toured

Affirmation

Simple form	V-ing form
I can tour you can tour he can tour we can tour you can tour they can tour	I can be touring you can be touring he can be touring we can be touring you can be touring they can be touring
Perfect	V-ing perfect
I can have toured you can have toured he can have toured we can have toured you can have toured they can have toured	I can have been touring you can have been touring he can have been touring we can have been touring you can have been touring they can have been touring

Negation

Simple form	V-ing form
I can't tour you can't tour he can't tour we can't tour you can't tour they can't tour	I can't be touring you can't be touring he can't be touring we can't be touring you can't be touring they can't be touring
Perfect	V-ing perfect
I can't have toured you can't have toured he can't have toured we can't have toured you can't have toured they can't have toured	I can't have been touring you can't have been touring he can't have been touring we can't have been touring you can't have been touring they can't have been touring

Interrogative form

Simple form	V-ing form
can I tour? can you tour? can he tour? can we tour? can you tour? can they tour?	can I be touring? can you be touring? can he be touring? can we be touring? can you be touring? can they be touring?
Perfect	V-ing perfect
can I have toured? can you have toured? can he have toured? can we have toured? can you have toured? can they have toured?	can I have been touring? can you have been touring? can he have been touring? can we have been touring? can you have been touring? can they have been touring?

Interro-negative form

Simple form	V-ing form
can't I tour? can't you tour? can't he tour? can't we tour? can't you tour? can't they tour?	can't I be touring? can't you be touring? can't he be touring? can't we be touring? can't you be touring? can't they be touring?
Perfect	V-ing perfect
can't I have toured? can't you have toured? can't he have toured? can't we have toured? can't you have toured? can't they have toured?	can't I have been touring? can't you have been touring? can't he have been touring? can't we have been touring? can't you have been touring? can't they have been touring?