I could symbol you could symbol she could symbol we could symbol you could symbol they could symbol
V-ing form
I could be symboling you could be symboling she could be symboling we could be symboling you could be symboling they could be symboling
Perfect
I could have symboled you could have symboled she could have symboled we could have symboled you could have symboled they could have symboled
V-ing perfect
I could have been symboling you could have been symboling she could have been symboling we could have been symboling you could have been symboling they could have been symboling
Negation
Simple form
I couldn't symbol you couldn't symbol she couldn't symbol we couldn't symbol you couldn't symbol they couldn't symbol
V-ing form
I couldn't be symboling you couldn't be symboling she couldn't be symboling we couldn't be symboling you couldn't be symboling they couldn't be symboling
Perfect
I couldn't have symboled you couldn't have symboled she couldn't have symboled we couldn't have symboled you couldn't have symboled they couldn't have symboled
V-ing perfect
I couldn't have been symboling you couldn't have been symboling she 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
could I symbol? could you symbol? could she symbol? could we symbol? could you symbol? could they symbol?
V-ing form
could I be symboling? could you be symboling? could she be symboling? could we be symboling? could you be symboling? could they be symboling?
Perfect
could I have symboled? could you have symboled? could she have symboled? could we have symboled? could you have symboled? could they have symboled?
V-ing perfect
could I have been symboling? could you have been symboling? could she have been symboling? could we have been symboling? could you have been symboling? could they have been symboling?
Interro-negative form
Simple form
couldn't I symbol? couldn't you symbol? couldn't she symbol? couldn't we symbol? couldn't you symbol? couldn't they symbol?
V-ing form
couldn't I be symboling? couldn't you be symboling? couldn't she be symboling? couldn't we be symboling? couldn't you be symboling? couldn't they be symboling?
Perfect
couldn't I have symboled? couldn't you have symboled? couldn't she have symboled? couldn't we have symboled? couldn't you have symboled? couldn't they have symboled?
V-ing perfect
couldn't I have been symboling? couldn't you have been symboling? couldn't she have been symboling? couldn't we have been symboling? couldn't you have been symboling? couldn't they have been symboling?