English verb conjugation
CAN FRANK

Regular verb: frank - franked - franked

Affirmation

Simple form	V-ing form
I can frank you can frank he can frank we can frank you can frank they can frank	I can be franking you can be franking he 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 he 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 he 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 he cannot frank we cannot frank you cannot frank they cannot frank	I cannot be franking you cannot be franking he 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 he 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 he 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 he frank? can we frank? can you frank? can they frank?	can I be franking? can you be franking? can he 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 he 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 he 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 he 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 he 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 he 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 he not have been franking? can we not have been franking? can you not have been franking? can they not have been franking?