must gape
Regular verb: gape - gaped- gaped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must gape
you must gape
he must gape
we must gape
you must gape
they must gape 	I must be gaping
you must be gaping
he must be gaping
we must be gaping
you must be gaping
they must be gaping	I must have gaped
you must have gaped
he must have gaped
we must have gaped
you must have gaped
they must have gaped	I must have been gaping
you must have been gaping
he must have been gaping
we must have been gaping
you must have been gaping
they must have been gaping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not gape
you must not gape
he must not gape
we must not gape
you must not gape
they must not gape 	I must not be gaping
you must not be gaping
he must not be gaping
we must not be gaping
you must not be gaping
they must not be gaping	I must not have gaped
you must not have gaped
he must not have gaped
we must not have gaped
you must not have gaped
they must not have gaped	I must not have been gaping
you must not have been gaping
he must not have been gaping
we must not have been gaping
you must not have been gaping
they must not have been gaping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I gape?
must you gape?
must he gape?
must we gape?
must you gape?
must they gape? 	must I be gaping?
must you be gaping?
must he be gaping?
must we be gaping?
must you be gaping?
must they be gaping? 	must I have gaped?
must you have gaped?
must he have gaped?
must we have gaped?
must you have gaped?
must they have gaped? 	must I have been gaping?
must you have been gaping?
must he have been gaping?
must we have been gaping?
must you have been gaping?
must they have been gaping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not gape?
must you not gape?
must he not gape?
must we not gape?
must you not gape?
must they not gape? 	must I not be gaping?
must you not be gaping?
must he not be gaping?
must we not be gaping?
must you not be gaping?
must they not be gaping? 	must I not have gaped?
must you not have gaped?
must he not have gaped?
must we not have gaped?
must you not have gaped?
must they not have gaped? 	must I not have been gaping?
must you not have been gaping?
must he not have been gaping?
must we not have been gaping?
must you not have been gaping?
must they not have been gaping?