must contemplate
Regular verb: contemplate - contemplated- contemplated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must contemplate
you must contemplate
he must contemplate
we must contemplate
you must contemplate
they must contemplate 	I must be contemplating
you must be contemplating
he must be contemplating
we must be contemplating
you must be contemplating
they must be contemplating	I must have contemplated
you must have contemplated
he must have contemplated
we must have contemplated
you must have contemplated
they must have contemplated	I must have been contemplating
you must have been contemplating
he must have been contemplating
we must have been contemplating
you must have been contemplating
they must have been contemplating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't contemplate
you mustn't contemplate
he mustn't contemplate
we mustn't contemplate
you mustn't contemplate
they mustn't contemplate 	I mustn't be contemplating
you mustn't be contemplating
he mustn't be contemplating
we mustn't be contemplating
you mustn't be contemplating
they mustn't be contemplating	I mustn't have contemplated
you mustn't have contemplated
he mustn't have contemplated
we mustn't have contemplated
you mustn't have contemplated
they mustn't have contemplated	I mustn't have been contemplating
you mustn't have been contemplating
he mustn't have been contemplating
we mustn't have been contemplating
you mustn't have been contemplating
they mustn't have been contemplating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I contemplate?
must you contemplate?
must he contemplate?
must we contemplate?
must you contemplate?
must they contemplate? 	must I be contemplating?
must you be contemplating?
must he be contemplating?
must we be contemplating?
must you be contemplating?
must they be contemplating? 	must I have contemplated?
must you have contemplated?
must he have contemplated?
must we have contemplated?
must you have contemplated?
must they have contemplated? 	must I have been contemplating?
must you have been contemplating?
must he have been contemplating?
must we have been contemplating?
must you have been contemplating?
must they have been contemplating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I contemplate?
mustn't you contemplate?
mustn't he contemplate?
mustn't we contemplate?
mustn't you contemplate?
mustn't they contemplate? 	mustn't I be contemplating?
mustn't you be contemplating?
mustn't he be contemplating?
mustn't we be contemplating?
mustn't you be contemplating?
mustn't they be contemplating? 	mustn't I have contemplated?
mustn't you have contemplated?
mustn't he have contemplated?
mustn't we have contemplated?
mustn't you have contemplated?
mustn't they have contemplated? 	mustn't I have been contemplating?
mustn't you have been contemplating?
mustn't he have been contemplating?
mustn't we have been contemplating?
mustn't you have been contemplating?
mustn't they have been contemplating?