English verb conjugation
COULD TETANIZE

Regular verb: tetanize - tetanized - tetanized

Affirmation

Simple form	V-ing form
I could tetanize you could tetanize he could tetanize we could tetanize you could tetanize they could tetanize	I could be tetanizing you could be tetanizing he could be tetanizing we could be tetanizing you could be tetanizing they could be tetanizing
Perfect	V-ing perfect
I could have tetanized you could have tetanized he could have tetanized we could have tetanized you could have tetanized they could have tetanized	I could have been tetanizing you could have been tetanizing he could have been tetanizing we could have been tetanizing you could have been tetanizing they could have been tetanizing

Negation

Simple form	V-ing form
I couldn't tetanize you couldn't tetanize he couldn't tetanize we couldn't tetanize you couldn't tetanize they couldn't tetanize	I couldn't be tetanizing you couldn't be tetanizing he couldn't be tetanizing we couldn't be tetanizing you couldn't be tetanizing they couldn't be tetanizing
Perfect	V-ing perfect
I couldn't have tetanized you couldn't have tetanized he couldn't have tetanized we couldn't have tetanized you couldn't have tetanized they couldn't have tetanized	I couldn't have been tetanizing you couldn't have been tetanizing he couldn't have been tetanizing we couldn't have been tetanizing you couldn't have been tetanizing they couldn't have been tetanizing

Interrogative form

Simple form	V-ing form
could I tetanize? could you tetanize? could he tetanize? could we tetanize? could you tetanize? could they tetanize?	could I be tetanizing? could you be tetanizing? could he be tetanizing? could we be tetanizing? could you be tetanizing? could they be tetanizing?
Perfect	V-ing perfect
could I have tetanized? could you have tetanized? could he have tetanized? could we have tetanized? could you have tetanized? could they have tetanized?	could I have been tetanizing? could you have been tetanizing? could he have been tetanizing? could we have been tetanizing? could you have been tetanizing? could they have been tetanizing?

Interro-negative form

Simple form	V-ing form
couldn't I tetanize? couldn't you tetanize? couldn't he tetanize? couldn't we tetanize? couldn't you tetanize? couldn't they tetanize?	couldn't I be tetanizing? couldn't you be tetanizing? couldn't he be tetanizing? couldn't we be tetanizing? couldn't you be tetanizing? couldn't they be tetanizing?
Perfect	V-ing perfect
couldn't I have tetanized? couldn't you have tetanized? couldn't he have tetanized? couldn't we have tetanized? couldn't you have tetanized? couldn't they have tetanized?	couldn't I have been tetanizing? couldn't you have been tetanizing? couldn't he have been tetanizing? couldn't we have been tetanizing? couldn't you have been tetanizing? couldn't they have been tetanizing?