English verb conjugation
COULD INPUT

Irregular verb: input - input - input

Affirmation

Simple form	V-ing form
I could input you could input she could input we could input you could input they could input	I could be inputing you could be inputing she 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 she 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 she 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 she 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 she 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 she 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 she 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 she input? could we input? could you input? could they input?	could I be inputing? could you be inputing? could she 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 she 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 she 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 she 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 she 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 she 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 she have been inputing? couldn't we have been inputing? couldn't you have been inputing? couldn't they have been inputing?