English verb conjugation
MUST ACIDIFY

Regular verb: acidify - acidified - acidified

Affirmation

Simple form	V-ing form
I must acidify you must acidify he must acidify we must acidify you must acidify they must acidify	I must be acidifying you must be acidifying he must be acidifying we must be acidifying you must be acidifying they must be acidifying
Perfect	V-ing perfect
I must have acidified you must have acidified he must have acidified we must have acidified you must have acidified they must have acidified	I must have been acidifying you must have been acidifying he must have been acidifying we must have been acidifying you must have been acidifying they must have been acidifying

Negation

Simple form	V-ing form
I must not acidify you must not acidify he must not acidify we must not acidify you must not acidify they must not acidify	I must not be acidifying you must not be acidifying he must not be acidifying we must not be acidifying you must not be acidifying they must not be acidifying
Perfect	V-ing perfect
I must not have acidified you must not have acidified he must not have acidified we must not have acidified you must not have acidified they must not have acidified	I must not have been acidifying you must not have been acidifying he must not have been acidifying we must not have been acidifying you must not have been acidifying they must not have been acidifying

Interrogative form

Simple form	V-ing form
must I acidify? must you acidify? must he acidify? must we acidify? must you acidify? must they acidify?	must I be acidifying? must you be acidifying? must he be acidifying? must we be acidifying? must you be acidifying? must they be acidifying?
Perfect	V-ing perfect
must I have acidified? must you have acidified? must he have acidified? must we have acidified? must you have acidified? must they have acidified?	must I have been acidifying? must you have been acidifying? must he have been acidifying? must we have been acidifying? must you have been acidifying? must they have been acidifying?

Interro-negative form

Simple form	V-ing form
must I not acidify? must you not acidify? must he not acidify? must we not acidify? must you not acidify? must they not acidify?	must I not be acidifying? must you not be acidifying? must he not be acidifying? must we not be acidifying? must you not be acidifying? must they not be acidifying?
Perfect	V-ing perfect
must I not have acidified? must you not have acidified? must he not have acidified? must we not have acidified? must you not have acidified? must they not have acidified?	must I not have been acidifying? must you not have been acidifying? must he not have been acidifying? must we not have been acidifying? must you not have been acidifying? must they not have been acidifying?