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 can't frank you can't frank he can't frank we can't frank you can't frank they can't frank	I can't be franking you can't be franking he can't be franking we can't be franking you can't be franking they can't be franking
Perfect	V-ing perfect
I can't have franked you can't have franked he can't have franked we can't have franked you can't have franked they can't have franked	I can't have been franking you can't have been franking he can't have been franking we can't have been franking you can't have been franking they can't 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't I frank? can't you frank? can't he frank? can't we frank? can't you frank? can't they frank?	can't I be franking? can't you be franking? can't he be franking? can't we be franking? can't you be franking? can't they be franking?
Perfect	V-ing perfect
can't I have franked? can't you have franked? can't he have franked? can't we have franked? can't you have franked? can't they have franked?	can't I have been franking? can't you have been franking? can't he have been franking? can't we have been franking? can't you have been franking? can't they have been franking?