I can refridgerate you can refridgerate he can refridgerate we can refridgerate you can refridgerate they can refridgerate
V-ing form
I can be refridgerating you can be refridgerating he can be refridgerating we can be refridgerating you can be refridgerating they can be refridgerating
Perfect
I can have refridgerated you can have refridgerated he can have refridgerated we can have refridgerated you can have refridgerated they can have refridgerated
V-ing perfect
I can have been refridgerating you can have been refridgerating he can have been refridgerating we can have been refridgerating you can have been refridgerating they can have been refridgerating
Negation
Simple form
I cannot refridgerate you cannot refridgerate he cannot refridgerate we cannot refridgerate you cannot refridgerate they cannot refridgerate
V-ing form
I cannot be refridgerating you cannot be refridgerating he cannot be refridgerating we cannot be refridgerating you cannot be refridgerating they cannot be refridgerating
Perfect
I cannot have refridgerated you cannot have refridgerated he cannot have refridgerated we cannot have refridgerated you cannot have refridgerated they cannot have refridgerated
V-ing perfect
I cannot have been refridgerating you cannot have been refridgerating he cannot have been refridgerating we cannot have been refridgerating you cannot have been refridgerating they cannot have been refridgerating
Interrogative form
Simple form
can I refridgerate? can you refridgerate? can he refridgerate? can we refridgerate? can you refridgerate? can they refridgerate?
V-ing form
can I be refridgerating? can you be refridgerating? can he be refridgerating? can we be refridgerating? can you be refridgerating? can they be refridgerating?
Perfect
can I have refridgerated? can you have refridgerated? can he have refridgerated? can we have refridgerated? can you have refridgerated? can they have refridgerated?
V-ing perfect
can I have been refridgerating? can you have been refridgerating? can he have been refridgerating? can we have been refridgerating? can you have been refridgerating? can they have been refridgerating?
Interro-negative form
Simple form
can I not refridgerate? can you not refridgerate? can he not refridgerate? can we not refridgerate? can you not refridgerate? can they not refridgerate?
V-ing form
can I not be refridgerating? can you not be refridgerating? can he not be refridgerating? can we not be refridgerating? can you not be refridgerating? can they not be refridgerating?
Perfect
can I not have refridgerated? can you not have refridgerated? can he not have refridgerated? can we not have refridgerated? can you not have refridgerated? can they not have refridgerated?
V-ing perfect
can I not have been refridgerating? can you not have been refridgerating? can he not have been refridgerating? can we not have been refridgerating? can you not have been refridgerating? can they not have been refridgerating?