could disperse
Regular verb: disperse - dispersed- dispersed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could disperse
you could disperse
she could disperse
we could disperse
you could disperse
they could disperse 	I could be dispersing
you could be dispersing
she could be dispersing
we could be dispersing
you could be dispersing
they could be dispersing	I could have dispersed
you could have dispersed
she could have dispersed
we could have dispersed
you could have dispersed
they could have dispersed	I could have been dispersing
you could have been dispersing
she could have been dispersing
we could have been dispersing
you could have been dispersing
they could have been dispersing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't disperse
you couldn't disperse
she couldn't disperse
we couldn't disperse
you couldn't disperse
they couldn't disperse 	I couldn't be dispersing
you couldn't be dispersing
she couldn't be dispersing
we couldn't be dispersing
you couldn't be dispersing
they couldn't be dispersing	I couldn't have dispersed
you couldn't have dispersed
she couldn't have dispersed
we couldn't have dispersed
you couldn't have dispersed
they couldn't have dispersed	I couldn't have been dispersing
you couldn't have been dispersing
she couldn't have been dispersing
we couldn't have been dispersing
you couldn't have been dispersing
they couldn't have been dispersing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I disperse?
could you disperse?
could she disperse?
could we disperse?
could you disperse?
could they disperse? 	could I be dispersing?
could you be dispersing?
could she be dispersing?
could we be dispersing?
could you be dispersing?
could they be dispersing? 	could I have dispersed?
could you have dispersed?
could she have dispersed?
could we have dispersed?
could you have dispersed?
could they have dispersed? 	could I have been dispersing?
could you have been dispersing?
could she have been dispersing?
could we have been dispersing?
could you have been dispersing?
could they have been dispersing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I disperse?
couldn't you disperse?
couldn't she disperse?
couldn't we disperse?
couldn't you disperse?
couldn't they disperse? 	couldn't I be dispersing?
couldn't you be dispersing?
couldn't she be dispersing?
couldn't we be dispersing?
couldn't you be dispersing?
couldn't they be dispersing? 	couldn't I have dispersed?
couldn't you have dispersed?
couldn't she have dispersed?
couldn't we have dispersed?
couldn't you have dispersed?
couldn't they have dispersed? 	couldn't I have been dispersing?
couldn't you have been dispersing?
couldn't she have been dispersing?
couldn't we have been dispersing?
couldn't you have been dispersing?
couldn't they have been dispersing?