English verb conjugation
COULD SYMBOL

Regular verb: symbol - symboled - symboled

Affirmation

Simple form	V-ing form
I could symbol you could symbol he could symbol we could symbol you could symbol they could symbol	I could be symboling you could be symboling he could be symboling we could be symboling you could be symboling they could be symboling
Perfect	V-ing perfect
I could have symboled you could have symboled he could have symboled we could have symboled you could have symboled they could have symboled	I could have been symboling you could have been symboling he could have been symboling we could have been symboling you could have been symboling they could have been symboling

Negation

Simple form	V-ing form
I couldn't symbol you couldn't symbol he couldn't symbol we couldn't symbol you couldn't symbol they couldn't symbol	I couldn't be symboling you couldn't be symboling he couldn't be symboling we couldn't be symboling you couldn't be symboling they couldn't be symboling
Perfect	V-ing perfect
I couldn't have symboled you couldn't have symboled he couldn't have symboled we couldn't have symboled you couldn't have symboled they couldn't have symboled	I couldn't have been symboling you couldn't have been symboling he couldn't have been symboling we couldn't have been symboling you couldn't have been symboling they couldn't have been symboling

Interrogative form

Simple form	V-ing form
could I symbol? could you symbol? could he symbol? could we symbol? could you symbol? could they symbol?	could I be symboling? could you be symboling? could he be symboling? could we be symboling? could you be symboling? could they be symboling?
Perfect	V-ing perfect
could I have symboled? could you have symboled? could he have symboled? could we have symboled? could you have symboled? could they have symboled?	could I have been symboling? could you have been symboling? could he have been symboling? could we have been symboling? could you have been symboling? could they have been symboling?

Interro-negative form

Simple form	V-ing form
couldn't I symbol? couldn't you symbol? couldn't he symbol? couldn't we symbol? couldn't you symbol? couldn't they symbol?	couldn't I be symboling? couldn't you be symboling? couldn't he be symboling? couldn't we be symboling? couldn't you be symboling? couldn't they be symboling?
Perfect	V-ing perfect
couldn't I have symboled? couldn't you have symboled? couldn't he have symboled? couldn't we have symboled? couldn't you have symboled? couldn't they have symboled?	couldn't I have been symboling? couldn't you have been symboling? couldn't he have been symboling? couldn't we have been symboling? couldn't you have been symboling? couldn't they have been symboling?