English verb conjugation
COULD REFRIGERATE

Regular verb: refrigerate - refrigerated - refrigerated

Affirmation

Simple form	V-ing form
I could refrigerate you could refrigerate she could refrigerate we could refrigerate you could refrigerate they could refrigerate	I could be refrigerating you could be refrigerating she could be refrigerating we could be refrigerating you could be refrigerating they could be refrigerating
Perfect	V-ing perfect
I could have refrigerated you could have refrigerated she could have refrigerated we could have refrigerated you could have refrigerated they could have refrigerated	I could have been refrigerating you could have been refrigerating she could have been refrigerating we could have been refrigerating you could have been refrigerating they could have been refrigerating

Negation

Simple form	V-ing form
I couldn't refrigerate you couldn't refrigerate she couldn't refrigerate we couldn't refrigerate you couldn't refrigerate they couldn't refrigerate	I couldn't be refrigerating you couldn't be refrigerating she couldn't be refrigerating we couldn't be refrigerating you couldn't be refrigerating they couldn't be refrigerating
Perfect	V-ing perfect
I couldn't have refrigerated you couldn't have refrigerated she couldn't have refrigerated we couldn't have refrigerated you couldn't have refrigerated they couldn't have refrigerated	I couldn't have been refrigerating you couldn't have been refrigerating she couldn't have been refrigerating we couldn't have been refrigerating you couldn't have been refrigerating they couldn't have been refrigerating

Interrogative form

Simple form	V-ing form
could I refrigerate? could you refrigerate? could she refrigerate? could we refrigerate? could you refrigerate? could they refrigerate?	could I be refrigerating? could you be refrigerating? could she be refrigerating? could we be refrigerating? could you be refrigerating? could they be refrigerating?
Perfect	V-ing perfect
could I have refrigerated? could you have refrigerated? could she have refrigerated? could we have refrigerated? could you have refrigerated? could they have refrigerated?	could I have been refrigerating? could you have been refrigerating? could she have been refrigerating? could we have been refrigerating? could you have been refrigerating? could they have been refrigerating?

Interro-negative form

Simple form	V-ing form
couldn't I refrigerate? couldn't you refrigerate? couldn't she refrigerate? couldn't we refrigerate? couldn't you refrigerate? couldn't they refrigerate?	couldn't I be refrigerating? couldn't you be refrigerating? couldn't she be refrigerating? couldn't we be refrigerating? couldn't you be refrigerating? couldn't they be refrigerating?
Perfect	V-ing perfect
couldn't I have refrigerated? couldn't you have refrigerated? couldn't she have refrigerated? couldn't we have refrigerated? couldn't you have refrigerated? couldn't they have refrigerated?	couldn't I have been refrigerating? couldn't you have been refrigerating? couldn't she have been refrigerating? couldn't we have been refrigerating? couldn't you have been refrigerating? couldn't they have been refrigerating?