English verb conjugation
CAN FRANK

Regular verb: frank - franked - franked

Affirmation

Simple form	V-ing form
I can frank you can frank she can frank we can frank you can frank they can frank	I can be franking you can be franking she can be franking we can be franking you can be franking they can be franking
Perfect	V-ing perfect
I can have franked you can have franked she can have franked we can have franked you can have franked they can have franked	I can have been franking you can have been franking she can have been franking we can have been franking you can have been franking they can have been franking

Negation

Simple form	V-ing form
I cannot frank you cannot frank she cannot frank we cannot frank you cannot frank they cannot frank	I cannot be franking you cannot be franking she cannot be franking we cannot be franking you cannot be franking they cannot be franking
Perfect	V-ing perfect
I cannot have franked you cannot have franked she cannot have franked we cannot have franked you cannot have franked they cannot have franked	I cannot have been franking you cannot have been franking she cannot have been franking we cannot have been franking you cannot have been franking they cannot have been franking

Interrogative form

Simple form	V-ing form
can I frank? can you frank? can she frank? can we frank? can you frank? can they frank?	can I be franking? can you be franking? can she be franking? can we be franking? can you be franking? can they be franking?
Perfect	V-ing perfect
can I have franked? can you have franked? can she have franked? can we have franked? can you have franked? can they have franked?	can I have been franking? can you have been franking? can she have been franking? can we have been franking? can you have been franking? can they have been franking?

Interro-negative form

Simple form	V-ing form
can I not frank? can you not frank? can she not frank? can we not frank? can you not frank? can they not frank?	can I not be franking? can you not be franking? can she not be franking? can we not be franking? can you not be franking? can they not be franking?
Perfect	V-ing perfect
can I not have franked? can you not have franked? can she not have franked? can we not have franked? can you not have franked? can they not have franked?	can I not have been franking? can you not have been franking? can she not have been franking? can we not have been franking? can you not have been franking? can they not have been franking?