English verb conjugation
CAN TENSE

Regular verb: tense - tensed - tensed

Affirmation

Simple form	V-ing form
I can tense you can tense he can tense we can tense you can tense they can tense	I can be tensing you can be tensing he can be tensing we can be tensing you can be tensing they can be tensing
Perfect	V-ing perfect
I can have tensed you can have tensed he can have tensed we can have tensed you can have tensed they can have tensed	I can have been tensing you can have been tensing he can have been tensing we can have been tensing you can have been tensing they can have been tensing

Negation

Simple form	V-ing form
I can't tense you can't tense he can't tense we can't tense you can't tense they can't tense	I can't be tensing you can't be tensing he can't be tensing we can't be tensing you can't be tensing they can't be tensing
Perfect	V-ing perfect
I can't have tensed you can't have tensed he can't have tensed we can't have tensed you can't have tensed they can't have tensed	I can't have been tensing you can't have been tensing he can't have been tensing we can't have been tensing you can't have been tensing they can't have been tensing

Interrogative form

Simple form	V-ing form
can I tense? can you tense? can he tense? can we tense? can you tense? can they tense?	can I be tensing? can you be tensing? can he be tensing? can we be tensing? can you be tensing? can they be tensing?
Perfect	V-ing perfect
can I have tensed? can you have tensed? can he have tensed? can we have tensed? can you have tensed? can they have tensed?	can I have been tensing? can you have been tensing? can he have been tensing? can we have been tensing? can you have been tensing? can they have been tensing?

Interro-negative form

Simple form	V-ing form
can't I tense? can't you tense? can't he tense? can't we tense? can't you tense? can't they tense?	can't I be tensing? can't you be tensing? can't he be tensing? can't we be tensing? can't you be tensing? can't they be tensing?
Perfect	V-ing perfect
can't I have tensed? can't you have tensed? can't he have tensed? can't we have tensed? can't you have tensed? can't they have tensed?	can't I have been tensing? can't you have been tensing? can't he have been tensing? can't we have been tensing? can't you have been tensing? can't they have been tensing?