English verb conjugation
CAN UM

Regular verb: um - umed - umed

Affirmation

Simple form	V-ing form
I can um you can um he can um we can um you can um they can um	I can be uming you can be uming he can be uming we can be uming you can be uming they can be uming
Perfect	V-ing perfect
I can have umed you can have umed he can have umed we can have umed you can have umed they can have umed	I can have been uming you can have been uming he can have been uming we can have been uming you can have been uming they can have been uming

Negation

Simple form	V-ing form
I can't um you can't um he can't um we can't um you can't um they can't um	I can't be uming you can't be uming he can't be uming we can't be uming you can't be uming they can't be uming
Perfect	V-ing perfect
I can't have umed you can't have umed he can't have umed we can't have umed you can't have umed they can't have umed	I can't have been uming you can't have been uming he can't have been uming we can't have been uming you can't have been uming they can't have been uming

Interrogative form

Simple form	V-ing form
can I um? can you um? can he um? can we um? can you um? can they um?	can I be uming? can you be uming? can he be uming? can we be uming? can you be uming? can they be uming?
Perfect	V-ing perfect
can I have umed? can you have umed? can he have umed? can we have umed? can you have umed? can they have umed?	can I have been uming? can you have been uming? can he have been uming? can we have been uming? can you have been uming? can they have been uming?

Interro-negative form

Simple form	V-ing form
can't I um? can't you um? can't he um? can't we um? can't you um? can't they um?	can't I be uming? can't you be uming? can't he be uming? can't we be uming? can't you be uming? can't they be uming?
Perfect	V-ing perfect
can't I have umed? can't you have umed? can't he have umed? can't we have umed? can't you have umed? can't they have umed?	can't I have been uming? can't you have been uming? can't he have been uming? can't we have been uming? can't you have been uming? can't they have been uming?