English verb conjugation
CAN SUMMON

Regular verb: summon - summoned - summoned

Affirmation

Simple form	V-ing form
I can summon you can summon he can summon we can summon you can summon they can summon	I can be summoning you can be summoning he can be summoning we can be summoning you can be summoning they can be summoning
Perfect	V-ing perfect
I can have summoned you can have summoned he can have summoned we can have summoned you can have summoned they can have summoned	I can have been summoning you can have been summoning he can have been summoning we can have been summoning you can have been summoning they can have been summoning

Negation

Simple form	V-ing form
I can't summon you can't summon he can't summon we can't summon you can't summon they can't summon	I can't be summoning you can't be summoning he can't be summoning we can't be summoning you can't be summoning they can't be summoning
Perfect	V-ing perfect
I can't have summoned you can't have summoned he can't have summoned we can't have summoned you can't have summoned they can't have summoned	I can't have been summoning you can't have been summoning he 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	V-ing form
can I summon? can you summon? can he summon? can we summon? can you summon? can they summon?	can I be summoning? can you be summoning? can he be summoning? can we be summoning? can you be summoning? can they be summoning?
Perfect	V-ing perfect
can I have summoned? can you have summoned? can he have summoned? can we have summoned? can you have summoned? can they have summoned?	can I have been summoning? can you have been summoning? can he have been summoning? can we have been summoning? can you have been summoning? can they have been summoning?

Interro-negative form

Simple form	V-ing form
can't I summon? can't you summon? can't he summon? can't we summon? can't you summon? can't they summon?	can't I be summoning? can't you be summoning? can't he be summoning? can't we be summoning? can't you be summoning? can't they be summoning?
Perfect	V-ing perfect
can't I have summoned? can't you have summoned? can't he have summoned? can't we have summoned? can't you have summoned? can't they have summoned?	can't I have been summoning? can't you have been summoning? can't he have been summoning? can't we have been summoning? can't you have been summoning? can't they have been summoning?