must jug
Regular verb: jug - jugged- jugged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must jug
you must jug
he must jug
we must jug
you must jug
they must jug 	I must be jugging
you must be jugging
he must be jugging
we must be jugging
you must be jugging
they must be jugging	I must have jugged
you must have jugged
he must have jugged
we must have jugged
you must have jugged
they must have jugged	I must have been jugging
you must have been jugging
he must have been jugging
we must have been jugging
you must have been jugging
they must have been jugging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not jug
you must not jug
he must not jug
we must not jug
you must not jug
they must not jug 	I must not be jugging
you must not be jugging
he must not be jugging
we must not be jugging
you must not be jugging
they must not be jugging	I must not have jugged
you must not have jugged
he must not have jugged
we must not have jugged
you must not have jugged
they must not have jugged	I must not have been jugging
you must not have been jugging
he must not have been jugging
we must not have been jugging
you must not have been jugging
they must not have been jugging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I jug?
must you jug?
must he jug?
must we jug?
must you jug?
must they jug? 	must I be jugging?
must you be jugging?
must he be jugging?
must we be jugging?
must you be jugging?
must they be jugging? 	must I have jugged?
must you have jugged?
must he have jugged?
must we have jugged?
must you have jugged?
must they have jugged? 	must I have been jugging?
must you have been jugging?
must he have been jugging?
must we have been jugging?
must you have been jugging?
must they have been jugging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not jug?
must you not jug?
must he not jug?
must we not jug?
must you not jug?
must they not jug? 	must I not be jugging?
must you not be jugging?
must he not be jugging?
must we not be jugging?
must you not be jugging?
must they not be jugging? 	must I not have jugged?
must you not have jugged?
must he not have jugged?
must we not have jugged?
must you not have jugged?
must they not have jugged? 	must I not have been jugging?
must you not have been jugging?
must he not have been jugging?
must we not have been jugging?
must you not have been jugging?
must they not have been jugging?