English verb conjugation
COULD INTERPOSE

Regular verb: interpose - interposed - interposed

Affirmation

Simple form	V-ing form
I could interpose you could interpose he could interpose we could interpose you could interpose they could interpose	I could be interposing you could be interposing he could be interposing we could be interposing you could be interposing they could be interposing
Perfect	V-ing perfect
I could have interposed you could have interposed he could have interposed we could have interposed you could have interposed they could have interposed	I could have been interposing you could have been interposing he could have been interposing we could have been interposing you could have been interposing they could have been interposing

Negation

Simple form	V-ing form
I couldn't interpose you couldn't interpose he couldn't interpose we couldn't interpose you couldn't interpose they couldn't interpose	I couldn't be interposing you couldn't be interposing he couldn't be interposing we couldn't be interposing you couldn't be interposing they couldn't be interposing
Perfect	V-ing perfect
I couldn't have interposed you couldn't have interposed he couldn't have interposed we couldn't have interposed you couldn't have interposed they couldn't have interposed	I couldn't have been interposing you couldn't have been interposing he couldn't have been interposing we couldn't have been interposing you couldn't have been interposing they couldn't have been interposing

Interrogative form

Simple form	V-ing form
could I interpose? could you interpose? could he interpose? could we interpose? could you interpose? could they interpose?	could I be interposing? could you be interposing? could he be interposing? could we be interposing? could you be interposing? could they be interposing?
Perfect	V-ing perfect
could I have interposed? could you have interposed? could he have interposed? could we have interposed? could you have interposed? could they have interposed?	could I have been interposing? could you have been interposing? could he have been interposing? could we have been interposing? could you have been interposing? could they have been interposing?

Interro-negative form

Simple form	V-ing form
couldn't I interpose? couldn't you interpose? couldn't he interpose? couldn't we interpose? couldn't you interpose? couldn't they interpose?	couldn't I be interposing? couldn't you be interposing? couldn't he be interposing? couldn't we be interposing? couldn't you be interposing? couldn't they be interposing?
Perfect	V-ing perfect
couldn't I have interposed? couldn't you have interposed? couldn't he have interposed? couldn't we have interposed? couldn't you have interposed? couldn't they have interposed?	couldn't I have been interposing? couldn't you have been interposing? couldn't he have been interposing? couldn't we have been interposing? couldn't you have been interposing? couldn't they have been interposing?