could tincture
Regular verb: tincture - tinctured- tinctured

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could tincture
you could tincture
she could tincture
we could tincture
you could tincture
they could tincture 	I could be tincturing
you could be tincturing
she could be tincturing
we could be tincturing
you could be tincturing
they could be tincturing	I could have tinctured
you could have tinctured
she could have tinctured
we could have tinctured
you could have tinctured
they could have tinctured	I could have been tincturing
you could have been tincturing
she could have been tincturing
we could have been tincturing
you could have been tincturing
they could have been tincturing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not tincture
you could not tincture
she could not tincture
we could not tincture
you could not tincture
they could not tincture 	I could not be tincturing
you could not be tincturing
she could not be tincturing
we could not be tincturing
you could not be tincturing
they could not be tincturing	I could not have tinctured
you could not have tinctured
she could not have tinctured
we could not have tinctured
you could not have tinctured
they could not have tinctured	I could not have been tincturing
you could not have been tincturing
she could not have been tincturing
we could not have been tincturing
you could not have been tincturing
they could not have been tincturing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I tincture?
could you tincture?
could she tincture?
could we tincture?
could you tincture?
could they tincture? 	could I be tincturing?
could you be tincturing?
could she be tincturing?
could we be tincturing?
could you be tincturing?
could they be tincturing? 	could I have tinctured?
could you have tinctured?
could she have tinctured?
could we have tinctured?
could you have tinctured?
could they have tinctured? 	could I have been tincturing?
could you have been tincturing?
could she have been tincturing?
could we have been tincturing?
could you have been tincturing?
could they have been tincturing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not tincture?
could you not tincture?
could she not tincture?
could we not tincture?
could you not tincture?
could they not tincture? 	could I not be tincturing?
could you not be tincturing?
could she not be tincturing?
could we not be tincturing?
could you not be tincturing?
could they not be tincturing? 	could I not have tinctured?
could you not have tinctured?
could she not have tinctured?
could we not have tinctured?
could you not have tinctured?
could they not have tinctured? 	could I not have been tincturing?
could you not have been tincturing?
could she not have been tincturing?
could we not have been tincturing?
could you not have been tincturing?
could they not have been tincturing?