English verb conjugation
MUST LUBRICATE

Regular verb: lubricate - lubricated - lubricated

Affirmation

Simple form	V-ing form
I must lubricate you must lubricate he must lubricate we must lubricate you must lubricate they must lubricate	I must be lubricating you must be lubricating he must be lubricating we must be lubricating you must be lubricating they must be lubricating
Perfect	V-ing perfect
I must have lubricated you must have lubricated he must have lubricated we must have lubricated you must have lubricated they must have lubricated	I must have been lubricating you must have been lubricating he must have been lubricating we must have been lubricating you must have been lubricating they must have been lubricating

Negation

Simple form	V-ing form
I must not lubricate you must not lubricate he must not lubricate we must not lubricate you must not lubricate they must not lubricate	I must not be lubricating you must not be lubricating he must not be lubricating we must not be lubricating you must not be lubricating they must not be lubricating
Perfect	V-ing perfect
I must not have lubricated you must not have lubricated he must not have lubricated we must not have lubricated you must not have lubricated they must not have lubricated	I must not have been lubricating you must not have been lubricating he must not have been lubricating we must not have been lubricating you must not have been lubricating they must not have been lubricating

Interrogative form

Simple form	V-ing form
must I lubricate? must you lubricate? must he lubricate? must we lubricate? must you lubricate? must they lubricate?	must I be lubricating? must you be lubricating? must he be lubricating? must we be lubricating? must you be lubricating? must they be lubricating?
Perfect	V-ing perfect
must I have lubricated? must you have lubricated? must he have lubricated? must we have lubricated? must you have lubricated? must they have lubricated?	must I have been lubricating? must you have been lubricating? must he have been lubricating? must we have been lubricating? must you have been lubricating? must they have been lubricating?

Interro-negative form

Simple form	V-ing form
must I not lubricate? must you not lubricate? must he not lubricate? must we not lubricate? must you not lubricate? must they not lubricate?	must I not be lubricating? must you not be lubricating? must he not be lubricating? must we not be lubricating? must you not be lubricating? must they not be lubricating?
Perfect	V-ing perfect
must I not have lubricated? must you not have lubricated? must he not have lubricated? must we not have lubricated? must you not have lubricated? must they not have lubricated?	must I not have been lubricating? must you not have been lubricating? must he not have been lubricating? must we not have been lubricating? must you not have been lubricating? must they not have been lubricating?