English verb conjugation
MUST INTERLEAVE

Regular verb: interleave - interleaved - interleaved

Affirmation

Simple form	V-ing form
I must interleave you must interleave he must interleave we must interleave you must interleave they must interleave	I must be interleaving you must be interleaving he must be interleaving we must be interleaving you must be interleaving they must be interleaving
Perfect	V-ing perfect
I must have interleaved you must have interleaved he must have interleaved we must have interleaved you must have interleaved they must have interleaved	I must have been interleaving you must have been interleaving he must have been interleaving we must have been interleaving you must have been interleaving they must have been interleaving

Negation

Simple form	V-ing form
I mustn't interleave you mustn't interleave he mustn't interleave we mustn't interleave you mustn't interleave they mustn't interleave	I mustn't be interleaving you mustn't be interleaving he mustn't be interleaving we mustn't be interleaving you mustn't be interleaving they mustn't be interleaving
Perfect	V-ing perfect
I mustn't have interleaved you mustn't have interleaved he mustn't have interleaved we mustn't have interleaved you mustn't have interleaved they mustn't have interleaved	I mustn't have been interleaving you mustn't have been interleaving he mustn't have been interleaving we mustn't have been interleaving you mustn't have been interleaving they mustn't have been interleaving

Interrogative form

Simple form	V-ing form
must I interleave? must you interleave? must he interleave? must we interleave? must you interleave? must they interleave?	must I be interleaving? must you be interleaving? must he be interleaving? must we be interleaving? must you be interleaving? must they be interleaving?
Perfect	V-ing perfect
must I have interleaved? must you have interleaved? must he have interleaved? must we have interleaved? must you have interleaved? must they have interleaved?	must I have been interleaving? must you have been interleaving? must he have been interleaving? must we have been interleaving? must you have been interleaving? must they have been interleaving?

Interro-negative form

Simple form	V-ing form
mustn't I interleave? mustn't you interleave? mustn't he interleave? mustn't we interleave? mustn't you interleave? mustn't they interleave?	mustn't I be interleaving? mustn't you be interleaving? mustn't he be interleaving? mustn't we be interleaving? mustn't you be interleaving? mustn't they be interleaving?
Perfect	V-ing perfect
mustn't I have interleaved? mustn't you have interleaved? mustn't he have interleaved? mustn't we have interleaved? mustn't you have interleaved? mustn't they have interleaved?	mustn't I have been interleaving? mustn't you have been interleaving? mustn't he have been interleaving? mustn't we have been interleaving? mustn't you have been interleaving? mustn't they have been interleaving?