English verb conjugation
COULD RATIONALIZE

Regular verb: rationalize - rationalized - rationalized

Affirmation

Simple form	V-ing form
I could rationalize you could rationalize he could rationalize we could rationalize you could rationalize they could rationalize	I could be rationalizing you could be rationalizing he could be rationalizing we could be rationalizing you could be rationalizing they could be rationalizing
Perfect	V-ing perfect
I could have rationalized you could have rationalized he could have rationalized we could have rationalized you could have rationalized they could have rationalized	I could have been rationalizing you could have been rationalizing he could have been rationalizing we could have been rationalizing you could have been rationalizing they could have been rationalizing

Negation

Simple form	V-ing form
I couldn't rationalize you couldn't rationalize he couldn't rationalize we couldn't rationalize you couldn't rationalize they couldn't rationalize	I couldn't be rationalizing you couldn't be rationalizing he couldn't be rationalizing we couldn't be rationalizing you couldn't be rationalizing they couldn't be rationalizing
Perfect	V-ing perfect
I couldn't have rationalized you couldn't have rationalized he couldn't have rationalized we couldn't have rationalized you couldn't have rationalized they couldn't have rationalized	I couldn't have been rationalizing you couldn't have been rationalizing he couldn't have been rationalizing we couldn't have been rationalizing you couldn't have been rationalizing they couldn't have been rationalizing

Interrogative form

Simple form	V-ing form
could I rationalize? could you rationalize? could he rationalize? could we rationalize? could you rationalize? could they rationalize?	could I be rationalizing? could you be rationalizing? could he be rationalizing? could we be rationalizing? could you be rationalizing? could they be rationalizing?
Perfect	V-ing perfect
could I have rationalized? could you have rationalized? could he have rationalized? could we have rationalized? could you have rationalized? could they have rationalized?	could I have been rationalizing? could you have been rationalizing? could he have been rationalizing? could we have been rationalizing? could you have been rationalizing? could they have been rationalizing?

Interro-negative form

Simple form	V-ing form
couldn't I rationalize? couldn't you rationalize? couldn't he rationalize? couldn't we rationalize? couldn't you rationalize? couldn't they rationalize?	couldn't I be rationalizing? couldn't you be rationalizing? couldn't he be rationalizing? couldn't we be rationalizing? couldn't you be rationalizing? couldn't they be rationalizing?
Perfect	V-ing perfect
couldn't I have rationalized? couldn't you have rationalized? couldn't he have rationalized? couldn't we have rationalized? couldn't you have rationalized? couldn't they have rationalized?	couldn't I have been rationalizing? couldn't you have been rationalizing? couldn't he have been rationalizing? couldn't we have been rationalizing? couldn't you have been rationalizing? couldn't they have been rationalizing?