I can ligate you can ligate he can ligate we can ligate you can ligate they can ligate
V-ing form
I can be ligating you can be ligating he can be ligating we can be ligating you can be ligating they can be ligating
Perfect
I can have ligated you can have ligated he can have ligated we can have ligated you can have ligated they can have ligated
V-ing perfect
I can have been ligating you can have been ligating he can have been ligating we can have been ligating you can have been ligating they can have been ligating
Negation
Simple form
I can't ligate you can't ligate he can't ligate we can't ligate you can't ligate they can't ligate
V-ing form
I can't be ligating you can't be ligating he can't be ligating we can't be ligating you can't be ligating they can't be ligating
Perfect
I can't have ligated you can't have ligated he can't have ligated we can't have ligated you can't have ligated they can't have ligated
V-ing perfect
I can't have been ligating you can't have been ligating he can't have been ligating we can't have been ligating you can't have been ligating they can't have been ligating
Interrogative form
Simple form
can I ligate? can you ligate? can he ligate? can we ligate? can you ligate? can they ligate?
V-ing form
can I be ligating? can you be ligating? can he be ligating? can we be ligating? can you be ligating? can they be ligating?
Perfect
can I have ligated? can you have ligated? can he have ligated? can we have ligated? can you have ligated? can they have ligated?
V-ing perfect
can I have been ligating? can you have been ligating? can he have been ligating? can we have been ligating? can you have been ligating? can they have been ligating?
Interro-negative form
Simple form
can't I ligate? can't you ligate? can't he ligate? can't we ligate? can't you ligate? can't they ligate?
V-ing form
can't I be ligating? can't you be ligating? can't he be ligating? can't we be ligating? can't you be ligating? can't they be ligating?
Perfect
can't I have ligated? can't you have ligated? can't he have ligated? can't we have ligated? can't you have ligated? can't they have ligated?
V-ing perfect
can't I have been ligating? can't you have been ligating? can't he have been ligating? can't we have been ligating? can't you have been ligating? can't they have been ligating?