must lech
Regular verb: lech - leched- leched

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must lech
you must lech
she must lech
we must lech
you must lech
they must lech 	I must be leching
you must be leching
she must be leching
we must be leching
you must be leching
they must be leching	I must have leched
you must have leched
she must have leched
we must have leched
you must have leched
they must have leched	I must have been leching
you must have been leching
she must have been leching
we must have been leching
you must have been leching
they must have been leching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't lech
you mustn't lech
she mustn't lech
we mustn't lech
you mustn't lech
they mustn't lech 	I mustn't be leching
you mustn't be leching
she mustn't be leching
we mustn't be leching
you mustn't be leching
they mustn't be leching	I mustn't have leched
you mustn't have leched
she mustn't have leched
we mustn't have leched
you mustn't have leched
they mustn't have leched	I mustn't have been leching
you mustn't have been leching
she mustn't have been leching
we mustn't have been leching
you mustn't have been leching
they mustn't have been leching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I lech?
must you lech?
must she lech?
must we lech?
must you lech?
must they lech? 	must I be leching?
must you be leching?
must she be leching?
must we be leching?
must you be leching?
must they be leching? 	must I have leched?
must you have leched?
must she have leched?
must we have leched?
must you have leched?
must they have leched? 	must I have been leching?
must you have been leching?
must she have been leching?
must we have been leching?
must you have been leching?
must they have been leching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I lech?
mustn't you lech?
mustn't she lech?
mustn't we lech?
mustn't you lech?
mustn't they lech? 	mustn't I be leching?
mustn't you be leching?
mustn't she be leching?
mustn't we be leching?
mustn't you be leching?
mustn't they be leching? 	mustn't I have leched?
mustn't you have leched?
mustn't she have leched?
mustn't we have leched?
mustn't you have leched?
mustn't they have leched? 	mustn't I have been leching?
mustn't you have been leching?
mustn't she have been leching?
mustn't we have been leching?
mustn't you have been leching?
mustn't they have been leching?