I can refasten you can refasten he can refasten we can refasten you can refasten they can refasten
V-ing form
I can be refastening you can be refastening he can be refastening we can be refastening you can be refastening they can be refastening
Perfect
I can have refastened you can have refastened he can have refastened we can have refastened you can have refastened they can have refastened
V-ing perfect
I can have been refastening you can have been refastening he can have been refastening we can have been refastening you can have been refastening they can have been refastening
Negation
Simple form
I can't refasten you can't refasten he can't refasten we can't refasten you can't refasten they can't refasten
V-ing form
I can't be refastening you can't be refastening he can't be refastening we can't be refastening you can't be refastening they can't be refastening
Perfect
I can't have refastened you can't have refastened he can't have refastened we can't have refastened you can't have refastened they can't have refastened
V-ing perfect
I can't have been refastening you can't have been refastening he can't have been refastening we can't have been refastening you can't have been refastening they can't have been refastening
Interrogative form
Simple form
can I refasten? can you refasten? can he refasten? can we refasten? can you refasten? can they refasten?
V-ing form
can I be refastening? can you be refastening? can he be refastening? can we be refastening? can you be refastening? can they be refastening?
Perfect
can I have refastened? can you have refastened? can he have refastened? can we have refastened? can you have refastened? can they have refastened?
V-ing perfect
can I have been refastening? can you have been refastening? can he have been refastening? can we have been refastening? can you have been refastening? can they have been refastening?
Interro-negative form
Simple form
can't I refasten? can't you refasten? can't he refasten? can't we refasten? can't you refasten? can't they refasten?
V-ing form
can't I be refastening? can't you be refastening? can't he be refastening? can't we be refastening? can't you be refastening? can't they be refastening?
Perfect
can't I have refastened? can't you have refastened? can't he have refastened? can't we have refastened? can't you have refastened? can't they have refastened?
V-ing perfect
can't I have been refastening? can't you have been refastening? can't he have been refastening? can't we have been refastening? can't you have been refastening? can't they have been refastening?