English verb conjugation
COULD SUPERPOSE

Regular verb: superpose - superposed - superposed

Affirmation

Simple form	V-ing form
I could superpose you could superpose he could superpose we could superpose you could superpose they could superpose	I could be superposing you could be superposing he could be superposing we could be superposing you could be superposing they could be superposing
Perfect	V-ing perfect
I could have superposed you could have superposed he could have superposed we could have superposed you could have superposed they could have superposed	I could have been superposing you could have been superposing he could have been superposing we could have been superposing you could have been superposing they could have been superposing

Negation

Simple form	V-ing form
I couldn't superpose you couldn't superpose he couldn't superpose we couldn't superpose you couldn't superpose they couldn't superpose	I couldn't be superposing you couldn't be superposing he couldn't be superposing we couldn't be superposing you couldn't be superposing they couldn't be superposing
Perfect	V-ing perfect
I couldn't have superposed you couldn't have superposed he couldn't have superposed we couldn't have superposed you couldn't have superposed they couldn't have superposed	I couldn't have been superposing you couldn't have been superposing he couldn't have been superposing we couldn't have been superposing you couldn't have been superposing they couldn't have been superposing

Interrogative form

Simple form	V-ing form
could I superpose? could you superpose? could he superpose? could we superpose? could you superpose? could they superpose?	could I be superposing? could you be superposing? could he be superposing? could we be superposing? could you be superposing? could they be superposing?
Perfect	V-ing perfect
could I have superposed? could you have superposed? could he have superposed? could we have superposed? could you have superposed? could they have superposed?	could I have been superposing? could you have been superposing? could he have been superposing? could we have been superposing? could you have been superposing? could they have been superposing?

Interro-negative form

Simple form	V-ing form
couldn't I superpose? couldn't you superpose? couldn't he superpose? couldn't we superpose? couldn't you superpose? couldn't they superpose?	couldn't I be superposing? couldn't you be superposing? couldn't he be superposing? couldn't we be superposing? couldn't you be superposing? couldn't they be superposing?
Perfect	V-ing perfect
couldn't I have superposed? couldn't you have superposed? couldn't he have superposed? couldn't we have superposed? couldn't you have superposed? couldn't they have superposed?	couldn't I have been superposing? couldn't you have been superposing? couldn't he have been superposing? couldn't we have been superposing? couldn't you have been superposing? couldn't they have been superposing?