must lambast
Regular verb: lambast - lambasted- lambasted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must lambast
you must lambast
she must lambast
we must lambast
you must lambast
they must lambast 	I must be lambasting
you must be lambasting
she must be lambasting
we must be lambasting
you must be lambasting
they must be lambasting	I must have lambasted
you must have lambasted
she must have lambasted
we must have lambasted
you must have lambasted
they must have lambasted	I must have been lambasting
you must have been lambasting
she must have been lambasting
we must have been lambasting
you must have been lambasting
they must have been lambasting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not lambast
you must not lambast
she must not lambast
we must not lambast
you must not lambast
they must not lambast 	I must not be lambasting
you must not be lambasting
she must not be lambasting
we must not be lambasting
you must not be lambasting
they must not be lambasting	I must not have lambasted
you must not have lambasted
she must not have lambasted
we must not have lambasted
you must not have lambasted
they must not have lambasted	I must not have been lambasting
you must not have been lambasting
she must not have been lambasting
we must not have been lambasting
you must not have been lambasting
they must not have been lambasting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I lambast?
must you lambast?
must she lambast?
must we lambast?
must you lambast?
must they lambast? 	must I be lambasting?
must you be lambasting?
must she be lambasting?
must we be lambasting?
must you be lambasting?
must they be lambasting? 	must I have lambasted?
must you have lambasted?
must she have lambasted?
must we have lambasted?
must you have lambasted?
must they have lambasted? 	must I have been lambasting?
must you have been lambasting?
must she have been lambasting?
must we have been lambasting?
must you have been lambasting?
must they have been lambasting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not lambast?
must you not lambast?
must she not lambast?
must we not lambast?
must you not lambast?
must they not lambast? 	must I not be lambasting?
must you not be lambasting?
must she not be lambasting?
must we not be lambasting?
must you not be lambasting?
must they not be lambasting? 	must I not have lambasted?
must you not have lambasted?
must she not have lambasted?
must we not have lambasted?
must you not have lambasted?
must they not have lambasted? 	must I not have been lambasting?
must you not have been lambasting?
must she not have been lambasting?
must we not have been lambasting?
must you not have been lambasting?
must they not have been lambasting?