could troll
Regular verb: troll - trolled- trolled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could troll
you could troll
she could troll
we could troll
you could troll
they could troll 	I could be trolling
you could be trolling
she could be trolling
we could be trolling
you could be trolling
they could be trolling	I could have trolled
you could have trolled
she could have trolled
we could have trolled
you could have trolled
they could have trolled	I could have been trolling
you could have been trolling
she could have been trolling
we could have been trolling
you could have been trolling
they could have been trolling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't troll
you couldn't troll
she couldn't troll
we couldn't troll
you couldn't troll
they couldn't troll 	I couldn't be trolling
you couldn't be trolling
she couldn't be trolling
we couldn't be trolling
you couldn't be trolling
they couldn't be trolling	I couldn't have trolled
you couldn't have trolled
she couldn't have trolled
we couldn't have trolled
you couldn't have trolled
they couldn't have trolled	I couldn't have been trolling
you couldn't have been trolling
she couldn't have been trolling
we couldn't have been trolling
you couldn't have been trolling
they couldn't have been trolling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I troll?
could you troll?
could she troll?
could we troll?
could you troll?
could they troll? 	could I be trolling?
could you be trolling?
could she be trolling?
could we be trolling?
could you be trolling?
could they be trolling? 	could I have trolled?
could you have trolled?
could she have trolled?
could we have trolled?
could you have trolled?
could they have trolled? 	could I have been trolling?
could you have been trolling?
could she have been trolling?
could we have been trolling?
could you have been trolling?
could they have been trolling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I troll?
couldn't you troll?
couldn't she troll?
couldn't we troll?
couldn't you troll?
couldn't they troll? 	couldn't I be trolling?
couldn't you be trolling?
couldn't she be trolling?
couldn't we be trolling?
couldn't you be trolling?
couldn't they be trolling? 	couldn't I have trolled?
couldn't you have trolled?
couldn't she have trolled?
couldn't we have trolled?
couldn't you have trolled?
couldn't they have trolled? 	couldn't I have been trolling?
couldn't you have been trolling?
couldn't she have been trolling?
couldn't we have been trolling?
couldn't you have been trolling?
couldn't they have been trolling?