could premix
Regular verb: premix - premixed- premixed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could premix
you could premix
she could premix
we could premix
you could premix
they could premix 	I could be premixing
you could be premixing
she could be premixing
we could be premixing
you could be premixing
they could be premixing	I could have premixed
you could have premixed
she could have premixed
we could have premixed
you could have premixed
they could have premixed	I could have been premixing
you could have been premixing
she could have been premixing
we could have been premixing
you could have been premixing
they could have been premixing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't premix
you couldn't premix
she couldn't premix
we couldn't premix
you couldn't premix
they couldn't premix 	I couldn't be premixing
you couldn't be premixing
she couldn't be premixing
we couldn't be premixing
you couldn't be premixing
they couldn't be premixing	I couldn't have premixed
you couldn't have premixed
she couldn't have premixed
we couldn't have premixed
you couldn't have premixed
they couldn't have premixed	I couldn't have been premixing
you couldn't have been premixing
she couldn't have been premixing
we couldn't have been premixing
you couldn't have been premixing
they couldn't have been premixing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I premix?
could you premix?
could she premix?
could we premix?
could you premix?
could they premix? 	could I be premixing?
could you be premixing?
could she be premixing?
could we be premixing?
could you be premixing?
could they be premixing? 	could I have premixed?
could you have premixed?
could she have premixed?
could we have premixed?
could you have premixed?
could they have premixed? 	could I have been premixing?
could you have been premixing?
could she have been premixing?
could we have been premixing?
could you have been premixing?
could they have been premixing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I premix?
couldn't you premix?
couldn't she premix?
couldn't we premix?
couldn't you premix?
couldn't they premix? 	couldn't I be premixing?
couldn't you be premixing?
couldn't she be premixing?
couldn't we be premixing?
couldn't you be premixing?
couldn't they be premixing? 	couldn't I have premixed?
couldn't you have premixed?
couldn't she have premixed?
couldn't we have premixed?
couldn't you have premixed?
couldn't they have premixed? 	couldn't I have been premixing?
couldn't you have been premixing?
couldn't she have been premixing?
couldn't we have been premixing?
couldn't you have been premixing?
couldn't they have been premixing?