ought to concave
Verbe régulier : concave - concaved- concaved

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I ought to concave
you ought to concave
he ought to concave
we ought to concave
you ought to concave
they ought to concave 	I ought to be concaving
you ought to be concaving
he ought to be concaving
we ought to be concaving
you ought to be concaving
they ought to be concaving	I ought to have concaved
you ought to have concaved
he ought to have concaved
we ought to have concaved
you ought to have concaved
they ought to have concaved	I ought to have been concaving
you ought to have been concaving
he ought to have been concaving
we ought to have been concaving
you ought to have been concaving
they ought to have been concaving	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I ought not to concave
you ought not to concave
he ought not to concave
we ought not to concave
you ought not to concave
they ought not to concave 	I ought not to concaving
you ought not to concaving
he ought not to concaving
we ought not to concaving
you ought not to concaving
they ought not to concaving	I ought not to have concaved
you ought not to have concaved
he ought not to have concaved
we ought not to have concaved
you ought not to have concaved
they ought not to have concaved	I ought not to have been concaving
you ought not to have been concaving
he ought not to have been concaving
we ought not to have been concaving
you ought not to have been concaving
they ought not to have been concaving	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
ought to I concave?
ought to you concave?
ought to he concave?
ought to we concave?
ought to you concave?
ought to they concave? 	ought to I be concaving?
ought to you be concaving?
ought to he be concaving?
ought to we be concaving?
ought to you be concaving?
ought to they be concaving? 	ought to I have concaved?
ought to you have concaved?
ought to he have concaved?
ought to we have concaved?
ought to you have concaved?
ought to they have concaved? 	ought to I have been concaving?
ought to you have been concaving?
ought to he have been concaving?
ought to we have been concaving?
ought to you have been concaving?
ought to they have been concaving? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
ought I not to concave?
ought you not to concave?
ought he not to concave?
ought we not to concave?
ought you not to concave?
ought they not to concave? 	ought I not to be concaving?
ought you not to be concaving?
ought he not to be concaving?
ought we not to be concaving?
ought you not to be concaving?
ought they not to be concaving? 	ought I not to have concaved?
ought you not to have concaved?
ought he not to have concaved?
ought we not to have concaved?
ought you not to have concaved?
ought they not to have concaved? 	ought I not to have been concaving?
ought you not to have been concaving?
ought he not to have been concaving?
ought we not to have been concaving?
ought you not to have been concaving?
ought they not to have been concaving?