could sinicize
Regular verb: sinicize - sinicized- sinicized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could sinicize
you could sinicize
she could sinicize
we could sinicize
you could sinicize
they could sinicize 	I could be sinicizing
you could be sinicizing
she could be sinicizing
we could be sinicizing
you could be sinicizing
they could be sinicizing	I could have sinicized
you could have sinicized
she could have sinicized
we could have sinicized
you could have sinicized
they could have sinicized	I could have been sinicizing
you could have been sinicizing
she could have been sinicizing
we could have been sinicizing
you could have been sinicizing
they could have been sinicizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't sinicize
you couldn't sinicize
she couldn't sinicize
we couldn't sinicize
you couldn't sinicize
they couldn't sinicize 	I couldn't be sinicizing
you couldn't be sinicizing
she couldn't be sinicizing
we couldn't be sinicizing
you couldn't be sinicizing
they couldn't be sinicizing	I couldn't have sinicized
you couldn't have sinicized
she couldn't have sinicized
we couldn't have sinicized
you couldn't have sinicized
they couldn't have sinicized	I couldn't have been sinicizing
you couldn't have been sinicizing
she couldn't have been sinicizing
we couldn't have been sinicizing
you couldn't have been sinicizing
they couldn't have been sinicizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I sinicize?
could you sinicize?
could she sinicize?
could we sinicize?
could you sinicize?
could they sinicize? 	could I be sinicizing?
could you be sinicizing?
could she be sinicizing?
could we be sinicizing?
could you be sinicizing?
could they be sinicizing? 	could I have sinicized?
could you have sinicized?
could she have sinicized?
could we have sinicized?
could you have sinicized?
could they have sinicized? 	could I have been sinicizing?
could you have been sinicizing?
could she have been sinicizing?
could we have been sinicizing?
could you have been sinicizing?
could they have been sinicizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I sinicize?
couldn't you sinicize?
couldn't she sinicize?
couldn't we sinicize?
couldn't you sinicize?
couldn't they sinicize? 	couldn't I be sinicizing?
couldn't you be sinicizing?
couldn't she be sinicizing?
couldn't we be sinicizing?
couldn't you be sinicizing?
couldn't they be sinicizing? 	couldn't I have sinicized?
couldn't you have sinicized?
couldn't she have sinicized?
couldn't we have sinicized?
couldn't you have sinicized?
couldn't they have sinicized? 	couldn't I have been sinicizing?
couldn't you have been sinicizing?
couldn't she have been sinicizing?
couldn't we have been sinicizing?
couldn't you have been sinicizing?
couldn't they have been sinicizing?