must nettle
Regular verb: nettle - nettled- nettled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must nettle
you must nettle
he must nettle
we must nettle
you must nettle
they must nettle 	I must be nettling
you must be nettling
he must be nettling
we must be nettling
you must be nettling
they must be nettling	I must have nettled
you must have nettled
he must have nettled
we must have nettled
you must have nettled
they must have nettled	I must have been nettling
you must have been nettling
he must have been nettling
we must have been nettling
you must have been nettling
they must have been nettling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't nettle
you mustn't nettle
he mustn't nettle
we mustn't nettle
you mustn't nettle
they mustn't nettle 	I mustn't be nettling
you mustn't be nettling
he mustn't be nettling
we mustn't be nettling
you mustn't be nettling
they mustn't be nettling	I mustn't have nettled
you mustn't have nettled
he mustn't have nettled
we mustn't have nettled
you mustn't have nettled
they mustn't have nettled	I mustn't have been nettling
you mustn't have been nettling
he mustn't have been nettling
we mustn't have been nettling
you mustn't have been nettling
they mustn't have been nettling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I nettle?
must you nettle?
must he nettle?
must we nettle?
must you nettle?
must they nettle? 	must I be nettling?
must you be nettling?
must he be nettling?
must we be nettling?
must you be nettling?
must they be nettling? 	must I have nettled?
must you have nettled?
must he have nettled?
must we have nettled?
must you have nettled?
must they have nettled? 	must I have been nettling?
must you have been nettling?
must he have been nettling?
must we have been nettling?
must you have been nettling?
must they have been nettling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I nettle?
mustn't you nettle?
mustn't he nettle?
mustn't we nettle?
mustn't you nettle?
mustn't they nettle? 	mustn't I be nettling?
mustn't you be nettling?
mustn't he be nettling?
mustn't we be nettling?
mustn't you be nettling?
mustn't they be nettling? 	mustn't I have nettled?
mustn't you have nettled?
mustn't he have nettled?
mustn't we have nettled?
mustn't you have nettled?
mustn't they have nettled? 	mustn't I have been nettling?
mustn't you have been nettling?
mustn't he have been nettling?
mustn't we have been nettling?
mustn't you have been nettling?
mustn't they have been nettling?