English verb conjugation
COULD REFRIGERATE

Regular verb: refrigerate - refrigerated - refrigerated

Affirmation

Simple form	V-ing form
I could refrigerate you could refrigerate he could refrigerate we could refrigerate you could refrigerate they could refrigerate	I could be refrigerating you could be refrigerating he 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 he 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 he 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 he 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 he 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 he 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 he 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 he refrigerate? could we refrigerate? could you refrigerate? could they refrigerate?	could I be refrigerating? could you be refrigerating? could he 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 he 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 he 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 he 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 he 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 he 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 he have been refrigerating? couldn't we have been refrigerating? couldn't you have been refrigerating? couldn't they have been refrigerating?