must overcast
Regular verb: overcast - overcasted- overcasted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must overcast
you must overcast
she must overcast
we must overcast
you must overcast
they must overcast 	I must be overcasting
you must be overcasting
she must be overcasting
we must be overcasting
you must be overcasting
they must be overcasting	I must have overcasted
you must have overcasted
she must have overcasted
we must have overcasted
you must have overcasted
they must have overcasted	I must have been overcasting
you must have been overcasting
she must have been overcasting
we must have been overcasting
you must have been overcasting
they must have been overcasting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't overcast
you mustn't overcast
she mustn't overcast
we mustn't overcast
you mustn't overcast
they mustn't overcast 	I mustn't be overcasting
you mustn't be overcasting
she mustn't be overcasting
we mustn't be overcasting
you mustn't be overcasting
they mustn't be overcasting	I mustn't have overcasted
you mustn't have overcasted
she mustn't have overcasted
we mustn't have overcasted
you mustn't have overcasted
they mustn't have overcasted	I mustn't have been overcasting
you mustn't have been overcasting
she mustn't have been overcasting
we mustn't have been overcasting
you mustn't have been overcasting
they mustn't have been overcasting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I overcast?
must you overcast?
must she overcast?
must we overcast?
must you overcast?
must they overcast? 	must I be overcasting?
must you be overcasting?
must she be overcasting?
must we be overcasting?
must you be overcasting?
must they be overcasting? 	must I have overcasted?
must you have overcasted?
must she have overcasted?
must we have overcasted?
must you have overcasted?
must they have overcasted? 	must I have been overcasting?
must you have been overcasting?
must she have been overcasting?
must we have been overcasting?
must you have been overcasting?
must they have been overcasting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I overcast?
mustn't you overcast?
mustn't she overcast?
mustn't we overcast?
mustn't you overcast?
mustn't they overcast? 	mustn't I be overcasting?
mustn't you be overcasting?
mustn't she be overcasting?
mustn't we be overcasting?
mustn't you be overcasting?
mustn't they be overcasting? 	mustn't I have overcasted?
mustn't you have overcasted?
mustn't she have overcasted?
mustn't we have overcasted?
mustn't you have overcasted?
mustn't they have overcasted? 	mustn't I have been overcasting?
mustn't you have been overcasting?
mustn't she have been overcasting?
mustn't we have been overcasting?
mustn't you have been overcasting?
mustn't they have been overcasting?