English verb conjugation
COULD REMODIFY

Regular verb: remodify - remodified - remodified

Affirmation

Simple form	V-ing form
I could remodify you could remodify he could remodify we could remodify you could remodify they could remodify	I could be remodifying you could be remodifying he could be remodifying we could be remodifying you could be remodifying they could be remodifying
Perfect	V-ing perfect
I could have remodified you could have remodified he could have remodified we could have remodified you could have remodified they could have remodified	I could have been remodifying you could have been remodifying he could have been remodifying we could have been remodifying you could have been remodifying they could have been remodifying

Negation

Simple form	V-ing form
I couldn't remodify you couldn't remodify he couldn't remodify we couldn't remodify you couldn't remodify they couldn't remodify	I couldn't be remodifying you couldn't be remodifying he couldn't be remodifying we couldn't be remodifying you couldn't be remodifying they couldn't be remodifying
Perfect	V-ing perfect
I couldn't have remodified you couldn't have remodified he couldn't have remodified we couldn't have remodified you couldn't have remodified they couldn't have remodified	I couldn't have been remodifying you couldn't have been remodifying he couldn't have been remodifying we couldn't have been remodifying you couldn't have been remodifying they couldn't have been remodifying

Interrogative form

Simple form	V-ing form
could I remodify? could you remodify? could he remodify? could we remodify? could you remodify? could they remodify?	could I be remodifying? could you be remodifying? could he be remodifying? could we be remodifying? could you be remodifying? could they be remodifying?
Perfect	V-ing perfect
could I have remodified? could you have remodified? could he have remodified? could we have remodified? could you have remodified? could they have remodified?	could I have been remodifying? could you have been remodifying? could he have been remodifying? could we have been remodifying? could you have been remodifying? could they have been remodifying?

Interro-negative form

Simple form	V-ing form
couldn't I remodify? couldn't you remodify? couldn't he remodify? couldn't we remodify? couldn't you remodify? couldn't they remodify?	couldn't I be remodifying? couldn't you be remodifying? couldn't he be remodifying? couldn't we be remodifying? couldn't you be remodifying? couldn't they be remodifying?
Perfect	V-ing perfect
couldn't I have remodified? couldn't you have remodified? couldn't he have remodified? couldn't we have remodified? couldn't you have remodified? couldn't they have remodified?	couldn't I have been remodifying? couldn't you have been remodifying? couldn't he have been remodifying? couldn't we have been remodifying? couldn't you have been remodifying? couldn't they have been remodifying?