could symbol
Regular verb: symbol - symboled- symboled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?