ought to descale
Verbo regular: descale - descaled- descaled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I ought to descale
you ought to descale
she ought to descale
we ought to descale
you ought to descale
they ought to descale 	I ought to be descaling
you ought to be descaling
she ought to be descaling
we ought to be descaling
you ought to be descaling
they ought to be descaling	I ought to have descaled
you ought to have descaled
she ought to have descaled
we ought to have descaled
you ought to have descaled
they ought to have descaled	I ought to have been descaling
you ought to have been descaling
she ought to have been descaling
we ought to have been descaling
you ought to have been descaling
they ought to have been descaling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I ought not to descale
you ought not to descale
she ought not to descale
we ought not to descale
you ought not to descale
they ought not to descale 	I ought not to descaling
you ought not to descaling
she ought not to descaling
we ought not to descaling
you ought not to descaling
they ought not to descaling	I ought not to have descaled
you ought not to have descaled
she ought not to have descaled
we ought not to have descaled
you ought not to have descaled
they ought not to have descaled	I ought not to have been descaling
you ought not to have been descaling
she ought not to have been descaling
we ought not to have been descaling
you ought not to have been descaling
they ought not to have been descaling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
ought to I descale?
ought to you descale?
ought to she descale?
ought to we descale?
ought to you descale?
ought to they descale? 	ought to I be descaling?
ought to you be descaling?
ought to she be descaling?
ought to we be descaling?
ought to you be descaling?
ought to they be descaling? 	ought to I have descaled?
ought to you have descaled?
ought to she have descaled?
ought to we have descaled?
ought to you have descaled?
ought to they have descaled? 	ought to I have been descaling?
ought to you have been descaling?
ought to she have been descaling?
ought to we have been descaling?
ought to you have been descaling?
ought to they have been descaling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
ought I not to descale?
ought you not to descale?
ought she not to descale?
ought we not to descale?
ought you not to descale?
ought they not to descale? 	ought I not to be descaling?
ought you not to be descaling?
ought she not to be descaling?
ought we not to be descaling?
ought you not to be descaling?
ought they not to be descaling? 	ought I not to have descaled?
ought you not to have descaled?
ought she not to have descaled?
ought we not to have descaled?
ought you not to have descaled?
ought they not to have descaled? 	ought I not to have been descaling?
ought you not to have been descaling?
ought she not to have been descaling?
ought we not to have been descaling?
ought you not to have been descaling?
ought they not to have been descaling?