must concave
Verbo regular: concave - concaved- concaved

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must concave
you must concave
she must concave
we must concave
you must concave
they must concave 	I must be concaving
you must be concaving
she must be concaving
we must be concaving
you must be concaving
they must be concaving	I must have concaved
you must have concaved
she 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
she must have been concaving
we must have been concaving
you must have been concaving
they must have been concaving	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not concave
you must not concave
she must not concave
we must not concave
you must not concave
they must not concave 	I must not be concaving
you must not be concaving
she must not be concaving
we must not be concaving
you must not be concaving
they must not be concaving	I must not have concaved
you must not have concaved
she must not have concaved
we must not have concaved
you must not have concaved
they must not have concaved	I must not have been concaving
you must not have been concaving
she must not have been concaving
we must not have been concaving
you must not have been concaving
they must not have been concaving	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I concave?
must you concave?
must she concave?
must we concave?
must you concave?
must they concave? 	must I be concaving?
must you be concaving?
must she be concaving?
must we be concaving?
must you be concaving?
must they be concaving? 	must I have concaved?
must you have concaved?
must she 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 she have been concaving?
must we have been concaving?
must you have been concaving?
must they have been concaving? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not concave?
must you not concave?
must she not concave?
must we not concave?
must you not concave?
must they not concave? 	must I not be concaving?
must you not be concaving?
must she not be concaving?
must we not be concaving?
must you not be concaving?
must they not be concaving? 	must I not have concaved?
must you not have concaved?
must she not have concaved?
must we not have concaved?
must you not have concaved?
must they not have concaved? 	must I not have been concaving?
must you not have been concaving?
must she not have been concaving?
must we not have been concaving?
must you not have been concaving?
must they not have been concaving?