must interlope
Regular verb: interlope - interloped- interloped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must interlope
you must interlope
she must interlope
we must interlope
you must interlope
they must interlope 	I must be interloping
you must be interloping
she must be interloping
we must be interloping
you must be interloping
they must be interloping	I must have interloped
you must have interloped
she must have interloped
we must have interloped
you must have interloped
they must have interloped	I must have been interloping
you must have been interloping
she must have been interloping
we must have been interloping
you must have been interloping
they must have been interloping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't interlope
you mustn't interlope
she mustn't interlope
we mustn't interlope
you mustn't interlope
they mustn't interlope 	I mustn't be interloping
you mustn't be interloping
she mustn't be interloping
we mustn't be interloping
you mustn't be interloping
they mustn't be interloping	I mustn't have interloped
you mustn't have interloped
she mustn't have interloped
we mustn't have interloped
you mustn't have interloped
they mustn't have interloped	I mustn't have been interloping
you mustn't have been interloping
she mustn't have been interloping
we mustn't have been interloping
you mustn't have been interloping
they mustn't have been interloping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I interlope?
must you interlope?
must she interlope?
must we interlope?
must you interlope?
must they interlope? 	must I be interloping?
must you be interloping?
must she be interloping?
must we be interloping?
must you be interloping?
must they be interloping? 	must I have interloped?
must you have interloped?
must she have interloped?
must we have interloped?
must you have interloped?
must they have interloped? 	must I have been interloping?
must you have been interloping?
must she have been interloping?
must we have been interloping?
must you have been interloping?
must they have been interloping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I interlope?
mustn't you interlope?
mustn't she interlope?
mustn't we interlope?
mustn't you interlope?
mustn't they interlope? 	mustn't I be interloping?
mustn't you be interloping?
mustn't she be interloping?
mustn't we be interloping?
mustn't you be interloping?
mustn't they be interloping? 	mustn't I have interloped?
mustn't you have interloped?
mustn't she have interloped?
mustn't we have interloped?
mustn't you have interloped?
mustn't they have interloped? 	mustn't I have been interloping?
mustn't you have been interloping?
mustn't she have been interloping?
mustn't we have been interloping?
mustn't you have been interloping?
mustn't they have been interloping?