must steave
Regular verb: steave - steaved- steaved

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must steave
you must steave
she must steave
we must steave
you must steave
they must steave 	I must be steaving
you must be steaving
she must be steaving
we must be steaving
you must be steaving
they must be steaving	I must have steaved
you must have steaved
she must have steaved
we must have steaved
you must have steaved
they must have steaved	I must have been steaving
you must have been steaving
she must have been steaving
we must have been steaving
you must have been steaving
they must have been steaving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't steave
you mustn't steave
she mustn't steave
we mustn't steave
you mustn't steave
they mustn't steave 	I mustn't be steaving
you mustn't be steaving
she mustn't be steaving
we mustn't be steaving
you mustn't be steaving
they mustn't be steaving	I mustn't have steaved
you mustn't have steaved
she mustn't have steaved
we mustn't have steaved
you mustn't have steaved
they mustn't have steaved	I mustn't have been steaving
you mustn't have been steaving
she mustn't have been steaving
we mustn't have been steaving
you mustn't have been steaving
they mustn't have been steaving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I steave?
must you steave?
must she steave?
must we steave?
must you steave?
must they steave? 	must I be steaving?
must you be steaving?
must she be steaving?
must we be steaving?
must you be steaving?
must they be steaving? 	must I have steaved?
must you have steaved?
must she have steaved?
must we have steaved?
must you have steaved?
must they have steaved? 	must I have been steaving?
must you have been steaving?
must she have been steaving?
must we have been steaving?
must you have been steaving?
must they have been steaving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I steave?
mustn't you steave?
mustn't she steave?
mustn't we steave?
mustn't you steave?
mustn't they steave? 	mustn't I be steaving?
mustn't you be steaving?
mustn't she be steaving?
mustn't we be steaving?
mustn't you be steaving?
mustn't they be steaving? 	mustn't I have steaved?
mustn't you have steaved?
mustn't she have steaved?
mustn't we have steaved?
mustn't you have steaved?
mustn't they have steaved? 	mustn't I have been steaving?
mustn't you have been steaving?
mustn't she have been steaving?
mustn't we have been steaving?
mustn't you have been steaving?
mustn't they have been steaving?