I can find you can find he can find we can find you can find they can find
V-ing form
I can be finding you can be finding he can be finding we can be finding you can be finding they can be finding
Perfect
I can have found you can have found he can have found we can have found you can have found they can have found
V-ing perfect
I can have been finding you can have been finding he can have been finding we can have been finding you can have been finding they can have been finding
Negation
Simple form
I can't find you can't find he can't find we can't find you can't find they can't find
V-ing form
I can't be finding you can't be finding he can't be finding we can't be finding you can't be finding they can't be finding
Perfect
I can't have found you can't have found he can't have found we can't have found you can't have found they can't have found
V-ing perfect
I can't have been finding you can't have been finding he can't have been finding we can't have been finding you can't have been finding they can't have been finding
Interrogative form
Simple form
can I find? can you find? can he find? can we find? can you find? can they find?
V-ing form
can I be finding? can you be finding? can he be finding? can we be finding? can you be finding? can they be finding?
Perfect
can I have found? can you have found? can he have found? can we have found? can you have found? can they have found?
V-ing perfect
can I have been finding? can you have been finding? can he have been finding? can we have been finding? can you have been finding? can they have been finding?
Interro-negative form
Simple form
can't I find? can't you find? can't he find? can't we find? can't you find? can't they find?
V-ing form
can't I be finding? can't you be finding? can't he be finding? can't we be finding? can't you be finding? can't they be finding?
Perfect
can't I have found? can't you have found? can't he have found? can't we have found? can't you have found? can't they have found?
V-ing perfect
can't I have been finding? can't you have been finding? can't he have been finding? can't we have been finding? can't you have been finding? can't they have been finding?