must gape
Regular verb: gape - gaped- gaped

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