must grope
Regular verb: grope - groped- groped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must grope
you must grope
she must grope
we must grope
you must grope
they must grope 	I must be groping
you must be groping
she must be groping
we must be groping
you must be groping
they must be groping	I must have groped
you must have groped
she must have groped
we must have groped
you must have groped
they must have groped	I must have been groping
you must have been groping
she must have been groping
we must have been groping
you must have been groping
they must have been groping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not grope
you must not grope
she must not grope
we must not grope
you must not grope
they must not grope 	I must not be groping
you must not be groping
she must not be groping
we must not be groping
you must not be groping
they must not be groping	I must not have groped
you must not have groped
she must not have groped
we must not have groped
you must not have groped
they must not have groped	I must not have been groping
you must not have been groping
she must not have been groping
we must not have been groping
you must not have been groping
they must not have been groping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I grope?
must you grope?
must she grope?
must we grope?
must you grope?
must they grope? 	must I be groping?
must you be groping?
must she be groping?
must we be groping?
must you be groping?
must they be groping? 	must I have groped?
must you have groped?
must she have groped?
must we have groped?
must you have groped?
must they have groped? 	must I have been groping?
must you have been groping?
must she have been groping?
must we have been groping?
must you have been groping?
must they have been groping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not grope?
must you not grope?
must she not grope?
must we not grope?
must you not grope?
must they not grope? 	must I not be groping?
must you not be groping?
must she not be groping?
must we not be groping?
must you not be groping?
must they not be groping? 	must I not have groped?
must you not have groped?
must she not have groped?
must we not have groped?
must you not have groped?
must they not have groped? 	must I not have been groping?
must you not have been groping?
must she not have been groping?
must we not have been groping?
must you not have been groping?
must they not have been groping?