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 cannot quad you cannot quad he cannot quad we cannot quad you cannot quad they cannot quad	I cannot be quading you cannot be quading he cannot be quading we cannot be quading you cannot be quading they cannot be quading
Perfect	V-ing perfect
I cannot have quaded you cannot have quaded he cannot have quaded we cannot have quaded you cannot have quaded they cannot have quaded	I cannot have been quading you cannot have been quading he cannot have been quading we cannot have been quading you cannot have been quading they cannot 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 I not quad? can you not quad? can he not quad? can we not quad? can you not quad? can they not quad?	can I not be quading? can you not be quading? can he not be quading? can we not be quading? can you not be quading? can they not be quading?
Perfect	V-ing perfect
can I not have quaded? can you not have quaded? can he not have quaded? can we not have quaded? can you not have quaded? can they not have quaded?	can I not have been quading? can you not have been quading? can he not have been quading? can we not have been quading? can you not have been quading? can they not have been quading?