English verb conjugation
COULD INPUT

Irregular verb: input - input - input

Affirmation

Simple form	V-ing form
I could input you could input he could input we could input you could input they could input	I could be inputing you could be inputing he could be inputing we could be inputing you could be inputing they could be inputing
Perfect	V-ing perfect
I could have input you could have input he could have input we could have input you could have input they could have input	I could have been inputing you could have been inputing he could have been inputing we could have been inputing you could have been inputing they could have been inputing

Negation

Simple form	V-ing form
I couldn't input you couldn't input he couldn't input we couldn't input you couldn't input they couldn't input	I couldn't be inputing you couldn't be inputing he couldn't be inputing we couldn't be inputing you couldn't be inputing they couldn't be inputing
Perfect	V-ing perfect
I couldn't have input you couldn't have input he couldn't have input we couldn't have input you couldn't have input they couldn't have input	I couldn't have been inputing you couldn't have been inputing he couldn't have been inputing we couldn't have been inputing you couldn't have been inputing they couldn't have been inputing

Interrogative form

Simple form	V-ing form
could I input? could you input? could he input? could we input? could you input? could they input?	could I be inputing? could you be inputing? could he be inputing? could we be inputing? could you be inputing? could they be inputing?
Perfect	V-ing perfect
could I have input? could you have input? could he have input? could we have input? could you have input? could they have input?	could I have been inputing? could you have been inputing? could he have been inputing? could we have been inputing? could you have been inputing? could they have been inputing?

Interro-negative form

Simple form	V-ing form
couldn't I input? couldn't you input? couldn't he input? couldn't we input? couldn't you input? couldn't they input?	couldn't I be inputing? couldn't you be inputing? couldn't he be inputing? couldn't we be inputing? couldn't you be inputing? couldn't they be inputing?
Perfect	V-ing perfect
couldn't I have input? couldn't you have input? couldn't he have input? couldn't we have input? couldn't you have input? couldn't they have input?	couldn't I have been inputing? couldn't you have been inputing? couldn't he have been inputing? couldn't we have been inputing? couldn't you have been inputing? couldn't they have been inputing?