I can refit you can refit she can refit we can refit you can refit they can refit
V-ing form
I can be refitting you can be refitting she can be refitting we can be refitting you can be refitting they can be refitting
Perfect
I can have refit you can have refit she can have refit we can have refit you can have refit they can have refit
V-ing perfect
I can have been refitting you can have been refitting she can have been refitting we can have been refitting you can have been refitting they can have been refitting
Negation
Simple form
I can't refit you can't refit she can't refit we can't refit you can't refit they can't refit
V-ing form
I can't be refitting you can't be refitting she can't be refitting we can't be refitting you can't be refitting they can't be refitting
Perfect
I can't have refit you can't have refit she can't have refit we can't have refit you can't have refit they can't have refit
V-ing perfect
I can't have been refitting you can't have been refitting she can't have been refitting we can't have been refitting you can't have been refitting they can't have been refitting
Interrogative form
Simple form
can I refit? can you refit? can she refit? can we refit? can you refit? can they refit?
V-ing form
can I be refitting? can you be refitting? can she be refitting? can we be refitting? can you be refitting? can they be refitting?
Perfect
can I have refit? can you have refit? can she have refit? can we have refit? can you have refit? can they have refit?
V-ing perfect
can I have been refitting? can you have been refitting? can she have been refitting? can we have been refitting? can you have been refitting? can they have been refitting?
Interro-negative form
Simple form
can't I refit? can't you refit? can't she refit? can't we refit? can't you refit? can't they refit?
V-ing form
can't I be refitting? can't you be refitting? can't she be refitting? can't we be refitting? can't you be refitting? can't they be refitting?
Perfect
can't I have refit? can't you have refit? can't she have refit? can't we have refit? can't you have refit? can't they have refit?
V-ing perfect
can't I have been refitting? can't you have been refitting? can't she have been refitting? can't we have been refitting? can't you have been refitting? can't they have been refitting?