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