I can flute you can flute he can flute we can flute you can flute they can flute
V-ing form
I can be fluting you can be fluting he can be fluting we can be fluting you can be fluting they can be fluting
Perfect
I can have fluted you can have fluted he can have fluted we can have fluted you can have fluted they can have fluted
V-ing perfect
I can have been fluting you can have been fluting he can have been fluting we can have been fluting you can have been fluting they can have been fluting
Negation
Simple form
I can't flute you can't flute he can't flute we can't flute you can't flute they can't flute
V-ing form
I can't be fluting you can't be fluting he can't be fluting we can't be fluting you can't be fluting they can't be fluting
Perfect
I can't have fluted you can't have fluted he can't have fluted we can't have fluted you can't have fluted they can't have fluted
V-ing perfect
I can't have been fluting you can't have been fluting he can't have been fluting we can't have been fluting you can't have been fluting they can't have been fluting
Interrogative form
Simple form
can I flute? can you flute? can he flute? can we flute? can you flute? can they flute?
V-ing form
can I be fluting? can you be fluting? can he be fluting? can we be fluting? can you be fluting? can they be fluting?
Perfect
can I have fluted? can you have fluted? can he have fluted? can we have fluted? can you have fluted? can they have fluted?
V-ing perfect
can I have been fluting? can you have been fluting? can he have been fluting? can we have been fluting? can you have been fluting? can they have been fluting?
Interro-negative form
Simple form
can't I flute? can't you flute? can't he flute? can't we flute? can't you flute? can't they flute?
V-ing form
can't I be fluting? can't you be fluting? can't he be fluting? can't we be fluting? can't you be fluting? can't they be fluting?
Perfect
can't I have fluted? can't you have fluted? can't he have fluted? can't we have fluted? can't you have fluted? can't they have fluted?
V-ing perfect
can't I have been fluting? can't you have been fluting? can't he have been fluting? can't we have been fluting? can't you have been fluting? can't they have been fluting?