English verb conjugation
COULD REFORTIFY

Regular verb: refortify - refortified - refortified

Affirmation

Simple form	V-ing form
I could refortify you could refortify he could refortify we could refortify you could refortify they could refortify	I could be refortifying you could be refortifying he could be refortifying we could be refortifying you could be refortifying they could be refortifying
Perfect	V-ing perfect
I could have refortified you could have refortified he could have refortified we could have refortified you could have refortified they could have refortified	I could have been refortifying you could have been refortifying he could have been refortifying we could have been refortifying you could have been refortifying they could have been refortifying

Negation

Simple form	V-ing form
I couldn't refortify you couldn't refortify he couldn't refortify we couldn't refortify you couldn't refortify they couldn't refortify	I couldn't be refortifying you couldn't be refortifying he couldn't be refortifying we couldn't be refortifying you couldn't be refortifying they couldn't be refortifying
Perfect	V-ing perfect
I couldn't have refortified you couldn't have refortified he couldn't have refortified we couldn't have refortified you couldn't have refortified they couldn't have refortified	I couldn't have been refortifying you couldn't have been refortifying he couldn't have been refortifying we couldn't have been refortifying you couldn't have been refortifying they couldn't have been refortifying

Interrogative form

Simple form	V-ing form
could I refortify? could you refortify? could he refortify? could we refortify? could you refortify? could they refortify?	could I be refortifying? could you be refortifying? could he be refortifying? could we be refortifying? could you be refortifying? could they be refortifying?
Perfect	V-ing perfect
could I have refortified? could you have refortified? could he have refortified? could we have refortified? could you have refortified? could they have refortified?	could I have been refortifying? could you have been refortifying? could he have been refortifying? could we have been refortifying? could you have been refortifying? could they have been refortifying?

Interro-negative form

Simple form	V-ing form
couldn't I refortify? couldn't you refortify? couldn't he refortify? couldn't we refortify? couldn't you refortify? couldn't they refortify?	couldn't I be refortifying? couldn't you be refortifying? couldn't he be refortifying? couldn't we be refortifying? couldn't you be refortifying? couldn't they be refortifying?
Perfect	V-ing perfect
couldn't I have refortified? couldn't you have refortified? couldn't he have refortified? couldn't we have refortified? couldn't you have refortified? couldn't they have refortified?	couldn't I have been refortifying? couldn't you have been refortifying? couldn't he have been refortifying? couldn't we have been refortifying? couldn't you have been refortifying? couldn't they have been refortifying?