must concave
Verbo regolare: concave - concaved- concaved

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must concave
you must concave
he must concave
we must concave
you must concave
they must concave 	I must be concaving
you must be concaving
he must be concaving
we must be concaving
you must be concaving
they must be concaving	I must have concaved
you must have concaved
he must have concaved
we must have concaved
you must have concaved
they must have concaved	I must have been concaving
you must have been concaving
he must have been concaving
we must have been concaving
you must have been concaving
they must have been concaving	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I mustn't concave
you mustn't concave
he mustn't concave
we mustn't concave
you mustn't concave
they mustn't concave 	I mustn't be concaving
you mustn't be concaving
he mustn't be concaving
we mustn't be concaving
you mustn't be concaving
they mustn't be concaving	I mustn't have concaved
you mustn't have concaved
he mustn't have concaved
we mustn't have concaved
you mustn't have concaved
they mustn't have concaved	I mustn't have been concaving
you mustn't have been concaving
he mustn't have been concaving
we mustn't have been concaving
you mustn't have been concaving
they mustn't have been concaving	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I concave?
must you concave?
must he concave?
must we concave?
must you concave?
must they concave? 	must I be concaving?
must you be concaving?
must he be concaving?
must we be concaving?
must you be concaving?
must they be concaving? 	must I have concaved?
must you have concaved?
must he have concaved?
must we have concaved?
must you have concaved?
must they have concaved? 	must I have been concaving?
must you have been concaving?
must he have been concaving?
must we have been concaving?
must you have been concaving?
must they have been concaving? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
mustn't I concave?
mustn't you concave?
mustn't he concave?
mustn't we concave?
mustn't you concave?
mustn't they concave? 	mustn't I be concaving?
mustn't you be concaving?
mustn't he be concaving?
mustn't we be concaving?
mustn't you be concaving?
mustn't they be concaving? 	mustn't I have concaved?
mustn't you have concaved?
mustn't he have concaved?
mustn't we have concaved?
mustn't you have concaved?
mustn't they have concaved? 	mustn't I have been concaving?
mustn't you have been concaving?
mustn't he have been concaving?
mustn't we have been concaving?
mustn't you have been concaving?
mustn't they have been concaving?