English verb conjugation
CAN QUANTIFY

Regular verb: quantify - quantified - quantified

Affirmation

Simple form	V-ing form
I can quantify you can quantify he can quantify we can quantify you can quantify they can quantify	I can be quantifying you can be quantifying he can be quantifying we can be quantifying you can be quantifying they can be quantifying
Perfect	V-ing perfect
I can have quantified you can have quantified he can have quantified we can have quantified you can have quantified they can have quantified	I can have been quantifying you can have been quantifying he can have been quantifying we can have been quantifying you can have been quantifying they can have been quantifying

Negation

Simple form	V-ing form
I can't quantify you can't quantify he can't quantify we can't quantify you can't quantify they can't quantify	I can't be quantifying you can't be quantifying he can't be quantifying we can't be quantifying you can't be quantifying they can't be quantifying
Perfect	V-ing perfect
I can't have quantified you can't have quantified he can't have quantified we can't have quantified you can't have quantified they can't have quantified	I can't have been quantifying you can't have been quantifying he can't have been quantifying we can't have been quantifying you can't have been quantifying they can't have been quantifying

Interrogative form

Simple form	V-ing form
can I quantify? can you quantify? can he quantify? can we quantify? can you quantify? can they quantify?	can I be quantifying? can you be quantifying? can he be quantifying? can we be quantifying? can you be quantifying? can they be quantifying?
Perfect	V-ing perfect
can I have quantified? can you have quantified? can he have quantified? can we have quantified? can you have quantified? can they have quantified?	can I have been quantifying? can you have been quantifying? can he have been quantifying? can we have been quantifying? can you have been quantifying? can they have been quantifying?

Interro-negative form

Simple form	V-ing form
can't I quantify? can't you quantify? can't he quantify? can't we quantify? can't you quantify? can't they quantify?	can't I be quantifying? can't you be quantifying? can't he be quantifying? can't we be quantifying? can't you be quantifying? can't they be quantifying?
Perfect	V-ing perfect
can't I have quantified? can't you have quantified? can't he have quantified? can't we have quantified? can't you have quantified? can't they have quantified?	can't I have been quantifying? can't you have been quantifying? can't he have been quantifying? can't we have been quantifying? can't you have been quantifying? can't they have been quantifying?