I can weep you can weep he can weep we can weep you can weep they can weep
V-ing form
I can be weeping you can be weeping he can be weeping we can be weeping you can be weeping they can be weeping
Perfect
I can have wept you can have wept he can have wept we can have wept you can have wept they can have wept
V-ing perfect
I can have been weeping you can have been weeping he can have been weeping we can have been weeping you can have been weeping they can have been weeping
Negation
Simple form
I can't weep you can't weep he can't weep we can't weep you can't weep they can't weep
V-ing form
I can't be weeping you can't be weeping he can't be weeping we can't be weeping you can't be weeping they can't be weeping
Perfect
I can't have wept you can't have wept he can't have wept we can't have wept you can't have wept they can't have wept
V-ing perfect
I can't have been weeping you can't have been weeping he can't have been weeping we can't have been weeping you can't have been weeping they can't have been weeping
Interrogative form
Simple form
can I weep? can you weep? can he weep? can we weep? can you weep? can they weep?
V-ing form
can I be weeping? can you be weeping? can he be weeping? can we be weeping? can you be weeping? can they be weeping?
Perfect
can I have wept? can you have wept? can he have wept? can we have wept? can you have wept? can they have wept?
V-ing perfect
can I have been weeping? can you have been weeping? can he have been weeping? can we have been weeping? can you have been weeping? can they have been weeping?
Interro-negative form
Simple form
can't I weep? can't you weep? can't he weep? can't we weep? can't you weep? can't they weep?
V-ing form
can't I be weeping? can't you be weeping? can't he be weeping? can't we be weeping? can't you be weeping? can't they be weeping?
Perfect
can't I have wept? can't you have wept? can't he have wept? can't we have wept? can't you have wept? can't they have wept?
V-ing perfect
can't I have been weeping? can't you have been weeping? can't he have been weeping? can't we have been weeping? can't you have been weeping? can't they have been weeping?