I can summon you can summon she can summon we can summon you can summon they can summon
V-ing form
I can be summoning you can be summoning she can be summoning we can be summoning you can be summoning they can be summoning
Perfect
I can have summoned you can have summoned she can have summoned we can have summoned you can have summoned they can have summoned
V-ing perfect
I can have been summoning you can have been summoning she can have been summoning we can have been summoning you can have been summoning they can have been summoning
Negation
Simple form
I can't summon you can't summon she can't summon we can't summon you can't summon they can't summon
V-ing form
I can't be summoning you can't be summoning she can't be summoning we can't be summoning you can't be summoning they can't be summoning
Perfect
I can't have summoned you can't have summoned she can't have summoned we can't have summoned you can't have summoned they can't have summoned
V-ing perfect
I can't have been summoning you can't have been summoning she can't have been summoning we can't have been summoning you can't have been summoning they can't have been summoning
Interrogative form
Simple form
can I summon? can you summon? can she summon? can we summon? can you summon? can they summon?
V-ing form
can I be summoning? can you be summoning? can she be summoning? can we be summoning? can you be summoning? can they be summoning?
Perfect
can I have summoned? can you have summoned? can she have summoned? can we have summoned? can you have summoned? can they have summoned?
V-ing perfect
can I have been summoning? can you have been summoning? can she have been summoning? can we have been summoning? can you have been summoning? can they have been summoning?
Interro-negative form
Simple form
can't I summon? can't you summon? can't she summon? can't we summon? can't you summon? can't they summon?
V-ing form
can't I be summoning? can't you be summoning? can't she be summoning? can't we be summoning? can't you be summoning? can't they be summoning?
Perfect
can't I have summoned? can't you have summoned? can't she have summoned? can't we have summoned? can't you have summoned? can't they have summoned?
V-ing perfect
can't I have been summoning? can't you have been summoning? can't she have been summoning? can't we have been summoning? can't you have been summoning? can't they have been summoning?