English verb conjugation
CAN SHADOWBOX

Regular verb: shadowbox - shadowboxed - shadowboxed

Affirmation

Simple form	V-ing form
I can shadowbox you can shadowbox she can shadowbox we can shadowbox you can shadowbox they can shadowbox	I can be shadowboxing you can be shadowboxing she can be shadowboxing we can be shadowboxing you can be shadowboxing they can be shadowboxing
Perfect	V-ing perfect
I can have shadowboxed you can have shadowboxed she can have shadowboxed we can have shadowboxed you can have shadowboxed they can have shadowboxed	I can have been shadowboxing you can have been shadowboxing she can have been shadowboxing we can have been shadowboxing you can have been shadowboxing they can have been shadowboxing

Negation

Simple form	V-ing form
I can't shadowbox you can't shadowbox she can't shadowbox we can't shadowbox you can't shadowbox they can't shadowbox	I can't be shadowboxing you can't be shadowboxing she can't be shadowboxing we can't be shadowboxing you can't be shadowboxing they can't be shadowboxing
Perfect	V-ing perfect
I can't have shadowboxed you can't have shadowboxed she can't have shadowboxed we can't have shadowboxed you can't have shadowboxed they can't have shadowboxed	I can't have been shadowboxing you can't have been shadowboxing she can't have been shadowboxing we can't have been shadowboxing you can't have been shadowboxing they can't have been shadowboxing

Interrogative form

Simple form	V-ing form
can I shadowbox? can you shadowbox? can she shadowbox? can we shadowbox? can you shadowbox? can they shadowbox?	can I be shadowboxing? can you be shadowboxing? can she be shadowboxing? can we be shadowboxing? can you be shadowboxing? can they be shadowboxing?
Perfect	V-ing perfect
can I have shadowboxed? can you have shadowboxed? can she have shadowboxed? can we have shadowboxed? can you have shadowboxed? can they have shadowboxed?	can I have been shadowboxing? can you have been shadowboxing? can she have been shadowboxing? can we have been shadowboxing? can you have been shadowboxing? can they have been shadowboxing?

Interro-negative form

Simple form	V-ing form
can't I shadowbox? can't you shadowbox? can't she shadowbox? can't we shadowbox? can't you shadowbox? can't they shadowbox?	can't I be shadowboxing? can't you be shadowboxing? can't she be shadowboxing? can't we be shadowboxing? can't you be shadowboxing? can't they be shadowboxing?
Perfect	V-ing perfect
can't I have shadowboxed? can't you have shadowboxed? can't she have shadowboxed? can't we have shadowboxed? can't you have shadowboxed? can't they have shadowboxed?	can't I have been shadowboxing? can't you have been shadowboxing? can't she have been shadowboxing? can't we have been shadowboxing? can't you have been shadowboxing? can't they have been shadowboxing?