English verb conjugation
CAN QUAD

Regular verb: quad - quaded - quaded

Affirmation

Simple form	V-ing form
I can quad you can quad he can quad we can quad you can quad they can quad	I can be quading you can be quading he can be quading we can be quading you can be quading they can be quading
Perfect	V-ing perfect
I can have quaded you can have quaded he can have quaded we can have quaded you can have quaded they can have quaded	I can have been quading you can have been quading he can have been quading we can have been quading you can have been quading they can have been quading

Negation

Simple form	V-ing form
I can't quad you can't quad he can't quad we can't quad you can't quad they can't quad	I can't be quading you can't be quading he can't be quading we can't be quading you can't be quading they can't be quading
Perfect	V-ing perfect
I can't have quaded you can't have quaded he can't have quaded we can't have quaded you can't have quaded they can't have quaded	I can't have been quading you can't have been quading he can't have been quading we can't have been quading you can't have been quading they can't have been quading

Interrogative form

Simple form	V-ing form
can I quad? can you quad? can he quad? can we quad? can you quad? can they quad?	can I be quading? can you be quading? can he be quading? can we be quading? can you be quading? can they be quading?
Perfect	V-ing perfect
can I have quaded? can you have quaded? can he have quaded? can we have quaded? can you have quaded? can they have quaded?	can I have been quading? can you have been quading? can he have been quading? can we have been quading? can you have been quading? can they have been quading?

Interro-negative form

Simple form	V-ing form
can't I quad? can't you quad? can't he quad? can't we quad? can't you quad? can't they quad?	can't I be quading? can't you be quading? can't he be quading? can't we be quading? can't you be quading? can't they be quading?
Perfect	V-ing perfect
can't I have quaded? can't you have quaded? can't he have quaded? can't we have quaded? can't you have quaded? can't they have quaded?	can't I have been quading? can't you have been quading? can't he have been quading? can't we have been quading? can't you have been quading? can't they have been quading?