could calumniate
Regular verb: calumniate - calumniated- calumniated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could calumniate
you could calumniate
she could calumniate
we could calumniate
you could calumniate
they could calumniate 	I could be calumniating
you could be calumniating
she could be calumniating
we could be calumniating
you could be calumniating
they could be calumniating	I could have calumniated
you could have calumniated
she could have calumniated
we could have calumniated
you could have calumniated
they could have calumniated	I could have been calumniating
you could have been calumniating
she could have been calumniating
we could have been calumniating
you could have been calumniating
they could have been calumniating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't calumniate
you couldn't calumniate
she couldn't calumniate
we couldn't calumniate
you couldn't calumniate
they couldn't calumniate 	I couldn't be calumniating
you couldn't be calumniating
she couldn't be calumniating
we couldn't be calumniating
you couldn't be calumniating
they couldn't be calumniating	I couldn't have calumniated
you couldn't have calumniated
she couldn't have calumniated
we couldn't have calumniated
you couldn't have calumniated
they couldn't have calumniated	I couldn't have been calumniating
you couldn't have been calumniating
she couldn't have been calumniating
we couldn't have been calumniating
you couldn't have been calumniating
they couldn't have been calumniating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I calumniate?
could you calumniate?
could she calumniate?
could we calumniate?
could you calumniate?
could they calumniate? 	could I be calumniating?
could you be calumniating?
could she be calumniating?
could we be calumniating?
could you be calumniating?
could they be calumniating? 	could I have calumniated?
could you have calumniated?
could she have calumniated?
could we have calumniated?
could you have calumniated?
could they have calumniated? 	could I have been calumniating?
could you have been calumniating?
could she have been calumniating?
could we have been calumniating?
could you have been calumniating?
could they have been calumniating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I calumniate?
couldn't you calumniate?
couldn't she calumniate?
couldn't we calumniate?
couldn't you calumniate?
couldn't they calumniate? 	couldn't I be calumniating?
couldn't you be calumniating?
couldn't she be calumniating?
couldn't we be calumniating?
couldn't you be calumniating?
couldn't they be calumniating? 	couldn't I have calumniated?
couldn't you have calumniated?
couldn't she have calumniated?
couldn't we have calumniated?
couldn't you have calumniated?
couldn't they have calumniated? 	couldn't I have been calumniating?
couldn't you have been calumniating?
couldn't she have been calumniating?
couldn't we have been calumniating?
couldn't you have been calumniating?
couldn't they have been calumniating?