English verb conjugation
COULD BITUMINIZE

Regular verb: bituminize - bituminized - bituminized

Affirmation

Simple form	V-ing form
I could bituminize you could bituminize she could bituminize we could bituminize you could bituminize they could bituminize	I could be bituminizing you could be bituminizing she could be bituminizing we could be bituminizing you could be bituminizing they could be bituminizing
Perfect	V-ing perfect
I could have bituminized you could have bituminized she could have bituminized we could have bituminized you could have bituminized they could have bituminized	I could have been bituminizing you could have been bituminizing she could have been bituminizing we could have been bituminizing you could have been bituminizing they could have been bituminizing

Negation

Simple form	V-ing form
I couldn't bituminize you couldn't bituminize she couldn't bituminize we couldn't bituminize you couldn't bituminize they couldn't bituminize	I couldn't be bituminizing you couldn't be bituminizing she couldn't be bituminizing we couldn't be bituminizing you couldn't be bituminizing they couldn't be bituminizing
Perfect	V-ing perfect
I couldn't have bituminized you couldn't have bituminized she couldn't have bituminized we couldn't have bituminized you couldn't have bituminized they couldn't have bituminized	I couldn't have been bituminizing you couldn't have been bituminizing she couldn't have been bituminizing we couldn't have been bituminizing you couldn't have been bituminizing they couldn't have been bituminizing

Interrogative form

Simple form	V-ing form
could I bituminize? could you bituminize? could she bituminize? could we bituminize? could you bituminize? could they bituminize?	could I be bituminizing? could you be bituminizing? could she be bituminizing? could we be bituminizing? could you be bituminizing? could they be bituminizing?
Perfect	V-ing perfect
could I have bituminized? could you have bituminized? could she have bituminized? could we have bituminized? could you have bituminized? could they have bituminized?	could I have been bituminizing? could you have been bituminizing? could she have been bituminizing? could we have been bituminizing? could you have been bituminizing? could they have been bituminizing?

Interro-negative form

Simple form	V-ing form
couldn't I bituminize? couldn't you bituminize? couldn't she bituminize? couldn't we bituminize? couldn't you bituminize? couldn't they bituminize?	couldn't I be bituminizing? couldn't you be bituminizing? couldn't she be bituminizing? couldn't we be bituminizing? couldn't you be bituminizing? couldn't they be bituminizing?
Perfect	V-ing perfect
couldn't I have bituminized? couldn't you have bituminized? couldn't she have bituminized? couldn't we have bituminized? couldn't you have bituminized? couldn't they have bituminized?	couldn't I have been bituminizing? couldn't you have been bituminizing? couldn't she have been bituminizing? couldn't we have been bituminizing? couldn't you have been bituminizing? couldn't they have been bituminizing?