ought to letter
Verbo regular: letter - lettered- lettered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I ought to letter
you ought to letter
he ought to letter
we ought to letter
you ought to letter
they ought to letter 	I ought to be lettering
you ought to be lettering
he ought to be lettering
we ought to be lettering
you ought to be lettering
they ought to be lettering	I ought to have lettered
you ought to have lettered
he ought to have lettered
we ought to have lettered
you ought to have lettered
they ought to have lettered	I ought to have been lettering
you ought to have been lettering
he ought to have been lettering
we ought to have been lettering
you ought to have been lettering
they ought to have been lettering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I ought not to letter
you ought not to letter
he ought not to letter
we ought not to letter
you ought not to letter
they ought not to letter 	I ought not to lettering
you ought not to lettering
he ought not to lettering
we ought not to lettering
you ought not to lettering
they ought not to lettering	I ought not to have lettered
you ought not to have lettered
he ought not to have lettered
we ought not to have lettered
you ought not to have lettered
they ought not to have lettered	I ought not to have been lettering
you ought not to have been lettering
he ought not to have been lettering
we ought not to have been lettering
you ought not to have been lettering
they ought not to have been lettering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
ought to I letter?
ought to you letter?
ought to he letter?
ought to we letter?
ought to you letter?
ought to they letter? 	ought to I be lettering?
ought to you be lettering?
ought to he be lettering?
ought to we be lettering?
ought to you be lettering?
ought to they be lettering? 	ought to I have lettered?
ought to you have lettered?
ought to he have lettered?
ought to we have lettered?
ought to you have lettered?
ought to they have lettered? 	ought to I have been lettering?
ought to you have been lettering?
ought to he have been lettering?
ought to we have been lettering?
ought to you have been lettering?
ought to they have been lettering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
ought I not to letter?
ought you not to letter?
ought he not to letter?
ought we not to letter?
ought you not to letter?
ought they not to letter? 	ought I not to be lettering?
ought you not to be lettering?
ought he not to be lettering?
ought we not to be lettering?
ought you not to be lettering?
ought they not to be lettering? 	ought I not to have lettered?
ought you not to have lettered?
ought he not to have lettered?
ought we not to have lettered?
ought you not to have lettered?
ought they not to have lettered? 	ought I not to have been lettering?
ought you not to have been lettering?
ought he not to have been lettering?
ought we not to have been lettering?
ought you not to have been lettering?
ought they not to have been lettering?