English verb conjugation
COULD HYBRIDIZE

Regular verb: hybridize - hybridized - hybridized

Affirmation

Simple form	V-ing form
I could hybridize you could hybridize she could hybridize we could hybridize you could hybridize they could hybridize	I could be hybridizing you could be hybridizing she could be hybridizing we could be hybridizing you could be hybridizing they could be hybridizing
Perfect	V-ing perfect
I could have hybridized you could have hybridized she could have hybridized we could have hybridized you could have hybridized they could have hybridized	I could have been hybridizing you could have been hybridizing she could have been hybridizing we could have been hybridizing you could have been hybridizing they could have been hybridizing

Negation

Simple form	V-ing form
I couldn't hybridize you couldn't hybridize she couldn't hybridize we couldn't hybridize you couldn't hybridize they couldn't hybridize	I couldn't be hybridizing you couldn't be hybridizing she couldn't be hybridizing we couldn't be hybridizing you couldn't be hybridizing they couldn't be hybridizing
Perfect	V-ing perfect
I couldn't have hybridized you couldn't have hybridized she couldn't have hybridized we couldn't have hybridized you couldn't have hybridized they couldn't have hybridized	I couldn't have been hybridizing you couldn't have been hybridizing she couldn't have been hybridizing we couldn't have been hybridizing you couldn't have been hybridizing they couldn't have been hybridizing

Interrogative form

Simple form	V-ing form
could I hybridize? could you hybridize? could she hybridize? could we hybridize? could you hybridize? could they hybridize?	could I be hybridizing? could you be hybridizing? could she be hybridizing? could we be hybridizing? could you be hybridizing? could they be hybridizing?
Perfect	V-ing perfect
could I have hybridized? could you have hybridized? could she have hybridized? could we have hybridized? could you have hybridized? could they have hybridized?	could I have been hybridizing? could you have been hybridizing? could she have been hybridizing? could we have been hybridizing? could you have been hybridizing? could they have been hybridizing?

Interro-negative form

Simple form	V-ing form
couldn't I hybridize? couldn't you hybridize? couldn't she hybridize? couldn't we hybridize? couldn't you hybridize? couldn't they hybridize?	couldn't I be hybridizing? couldn't you be hybridizing? couldn't she be hybridizing? couldn't we be hybridizing? couldn't you be hybridizing? couldn't they be hybridizing?
Perfect	V-ing perfect
couldn't I have hybridized? couldn't you have hybridized? couldn't she have hybridized? couldn't we have hybridized? couldn't you have hybridized? couldn't they have hybridized?	couldn't I have been hybridizing? couldn't you have been hybridizing? couldn't she have been hybridizing? couldn't we have been hybridizing? couldn't you have been hybridizing? couldn't they have been hybridizing?