ought to twin
Regular verb: twin - twinned- twinned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to twin
you ought to twin
she ought to twin
we ought to twin
you ought to twin
they ought to twin 	I ought to be twinning
you ought to be twinning
she ought to be twinning
we ought to be twinning
you ought to be twinning
they ought to be twinning	I ought to have twinned
you ought to have twinned
she ought to have twinned
we ought to have twinned
you ought to have twinned
they ought to have twinned	I ought to have been twinning
you ought to have been twinning
she ought to have been twinning
we ought to have been twinning
you ought to have been twinning
they ought to have been twinning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to twin
you ought not to twin
she ought not to twin
we ought not to twin
you ought not to twin
they ought not to twin 	I ought not to twinning
you ought not to twinning
she ought not to twinning
we ought not to twinning
you ought not to twinning
they ought not to twinning	I ought not to have twinned
you ought not to have twinned
she ought not to have twinned
we ought not to have twinned
you ought not to have twinned
they ought not to have twinned	I ought not to have been twinning
you ought not to have been twinning
she ought not to have been twinning
we ought not to have been twinning
you ought not to have been twinning
they ought not to have been twinning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I twin?
ought to you twin?
ought to she twin?
ought to we twin?
ought to you twin?
ought to they twin? 	ought to I be twinning?
ought to you be twinning?
ought to she be twinning?
ought to we be twinning?
ought to you be twinning?
ought to they be twinning? 	ought to I have twinned?
ought to you have twinned?
ought to she have twinned?
ought to we have twinned?
ought to you have twinned?
ought to they have twinned? 	ought to I have been twinning?
ought to you have been twinning?
ought to she have been twinning?
ought to we have been twinning?
ought to you have been twinning?
ought to they have been twinning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to twin?
ought you not to twin?
ought she not to twin?
ought we not to twin?
ought you not to twin?
ought they not to twin? 	ought I not to be twinning?
ought you not to be twinning?
ought she not to be twinning?
ought we not to be twinning?
ought you not to be twinning?
ought they not to be twinning? 	ought I not to have twinned?
ought you not to have twinned?
ought she not to have twinned?
ought we not to have twinned?
ought you not to have twinned?
ought they not to have twinned? 	ought I not to have been twinning?
ought you not to have been twinning?
ought she not to have been twinning?
ought we not to have been twinning?
ought you not to have been twinning?
ought they not to have been twinning?