English verb conjugation
CAN TANK

Regular verb: tank - tanked - tanked

Affirmation

Simple form	V-ing form
I can tank you can tank he can tank we can tank you can tank they can tank	I can be tanking you can be tanking he can be tanking we can be tanking you can be tanking they can be tanking
Perfect	V-ing perfect
I can have tanked you can have tanked he can have tanked we can have tanked you can have tanked they can have tanked	I can have been tanking you can have been tanking he can have been tanking we can have been tanking you can have been tanking they can have been tanking

Negation

Simple form	V-ing form
I can't tank you can't tank he can't tank we can't tank you can't tank they can't tank	I can't be tanking you can't be tanking he can't be tanking we can't be tanking you can't be tanking they can't be tanking
Perfect	V-ing perfect
I can't have tanked you can't have tanked he can't have tanked we can't have tanked you can't have tanked they can't have tanked	I can't have been tanking you can't have been tanking he can't have been tanking we can't have been tanking you can't have been tanking they can't have been tanking

Interrogative form

Simple form	V-ing form
can I tank? can you tank? can he tank? can we tank? can you tank? can they tank?	can I be tanking? can you be tanking? can he be tanking? can we be tanking? can you be tanking? can they be tanking?
Perfect	V-ing perfect
can I have tanked? can you have tanked? can he have tanked? can we have tanked? can you have tanked? can they have tanked?	can I have been tanking? can you have been tanking? can he have been tanking? can we have been tanking? can you have been tanking? can they have been tanking?

Interro-negative form

Simple form	V-ing form
can't I tank? can't you tank? can't he tank? can't we tank? can't you tank? can't they tank?	can't I be tanking? can't you be tanking? can't he be tanking? can't we be tanking? can't you be tanking? can't they be tanking?
Perfect	V-ing perfect
can't I have tanked? can't you have tanked? can't he have tanked? can't we have tanked? can't you have tanked? can't they have tanked?	can't I have been tanking? can't you have been tanking? can't he have been tanking? can't we have been tanking? can't you have been tanking? can't they have been tanking?