English verb conjugation
COULD TELEX

Regular verb: telex - telexed - telexed

Affirmation

Simple form	V-ing form
I could telex you could telex he could telex we could telex you could telex they could telex	I could be telexing you could be telexing he could be telexing we could be telexing you could be telexing they could be telexing
Perfect	V-ing perfect
I could have telexed you could have telexed he could have telexed we could have telexed you could have telexed they could have telexed	I could have been telexing you could have been telexing he could have been telexing we could have been telexing you could have been telexing they could have been telexing

Negation

Simple form	V-ing form
I couldn't telex you couldn't telex he couldn't telex we couldn't telex you couldn't telex they couldn't telex	I couldn't be telexing you couldn't be telexing he couldn't be telexing we couldn't be telexing you couldn't be telexing they couldn't be telexing
Perfect	V-ing perfect
I couldn't have telexed you couldn't have telexed he couldn't have telexed we couldn't have telexed you couldn't have telexed they couldn't have telexed	I couldn't have been telexing you couldn't have been telexing he couldn't have been telexing we couldn't have been telexing you couldn't have been telexing they couldn't have been telexing

Interrogative form

Simple form	V-ing form
could I telex? could you telex? could he telex? could we telex? could you telex? could they telex?	could I be telexing? could you be telexing? could he be telexing? could we be telexing? could you be telexing? could they be telexing?
Perfect	V-ing perfect
could I have telexed? could you have telexed? could he have telexed? could we have telexed? could you have telexed? could they have telexed?	could I have been telexing? could you have been telexing? could he have been telexing? could we have been telexing? could you have been telexing? could they have been telexing?

Interro-negative form

Simple form	V-ing form
couldn't I telex? couldn't you telex? couldn't he telex? couldn't we telex? couldn't you telex? couldn't they telex?	couldn't I be telexing? couldn't you be telexing? couldn't he be telexing? couldn't we be telexing? couldn't you be telexing? couldn't they be telexing?
Perfect	V-ing perfect
couldn't I have telexed? couldn't you have telexed? couldn't he have telexed? couldn't we have telexed? couldn't you have telexed? couldn't they have telexed?	couldn't I have been telexing? couldn't you have been telexing? couldn't he have been telexing? couldn't we have been telexing? couldn't you have been telexing? couldn't they have been telexing?