could excoriate
Regular verb: excoriate - excoriated- excoriated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could excoriate
you could excoriate
she could excoriate
we could excoriate
you could excoriate
they could excoriate 	I could be excoriating
you could be excoriating
she could be excoriating
we could be excoriating
you could be excoriating
they could be excoriating	I could have excoriated
you could have excoriated
she could have excoriated
we could have excoriated
you could have excoriated
they could have excoriated	I could have been excoriating
you could have been excoriating
she could have been excoriating
we could have been excoriating
you could have been excoriating
they could have been excoriating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't excoriate
you couldn't excoriate
she couldn't excoriate
we couldn't excoriate
you couldn't excoriate
they couldn't excoriate 	I couldn't be excoriating
you couldn't be excoriating
she couldn't be excoriating
we couldn't be excoriating
you couldn't be excoriating
they couldn't be excoriating	I couldn't have excoriated
you couldn't have excoriated
she couldn't have excoriated
we couldn't have excoriated
you couldn't have excoriated
they couldn't have excoriated	I couldn't have been excoriating
you couldn't have been excoriating
she couldn't have been excoriating
we couldn't have been excoriating
you couldn't have been excoriating
they couldn't have been excoriating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I excoriate?
could you excoriate?
could she excoriate?
could we excoriate?
could you excoriate?
could they excoriate? 	could I be excoriating?
could you be excoriating?
could she be excoriating?
could we be excoriating?
could you be excoriating?
could they be excoriating? 	could I have excoriated?
could you have excoriated?
could she have excoriated?
could we have excoriated?
could you have excoriated?
could they have excoriated? 	could I have been excoriating?
could you have been excoriating?
could she have been excoriating?
could we have been excoriating?
could you have been excoriating?
could they have been excoriating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I excoriate?
couldn't you excoriate?
couldn't she excoriate?
couldn't we excoriate?
couldn't you excoriate?
couldn't they excoriate? 	couldn't I be excoriating?
couldn't you be excoriating?
couldn't she be excoriating?
couldn't we be excoriating?
couldn't you be excoriating?
couldn't they be excoriating? 	couldn't I have excoriated?
couldn't you have excoriated?
couldn't she have excoriated?
couldn't we have excoriated?
couldn't you have excoriated?
couldn't they have excoriated? 	couldn't I have been excoriating?
couldn't you have been excoriating?
couldn't she have been excoriating?
couldn't we have been excoriating?
couldn't you have been excoriating?
couldn't they have been excoriating?