ought to suffocate
Regular verb: suffocate - suffocated- suffocated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to suffocate
you ought to suffocate
he ought to suffocate
we ought to suffocate
you ought to suffocate
they ought to suffocate 	I ought to be suffocating
you ought to be suffocating
he ought to be suffocating
we ought to be suffocating
you ought to be suffocating
they ought to be suffocating	I ought to have suffocated
you ought to have suffocated
he ought to have suffocated
we ought to have suffocated
you ought to have suffocated
they ought to have suffocated	I ought to have been suffocating
you ought to have been suffocating
he ought to have been suffocating
we ought to have been suffocating
you ought to have been suffocating
they ought to have been suffocating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to suffocate
you ought not to suffocate
he ought not to suffocate
we ought not to suffocate
you ought not to suffocate
they ought not to suffocate 	I ought not to suffocating
you ought not to suffocating
he ought not to suffocating
we ought not to suffocating
you ought not to suffocating
they ought not to suffocating	I ought not to have suffocated
you ought not to have suffocated
he ought not to have suffocated
we ought not to have suffocated
you ought not to have suffocated
they ought not to have suffocated	I ought not to have been suffocating
you ought not to have been suffocating
he ought not to have been suffocating
we ought not to have been suffocating
you ought not to have been suffocating
they ought not to have been suffocating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I suffocate?
ought to you suffocate?
ought to he suffocate?
ought to we suffocate?
ought to you suffocate?
ought to they suffocate? 	ought to I be suffocating?
ought to you be suffocating?
ought to he be suffocating?
ought to we be suffocating?
ought to you be suffocating?
ought to they be suffocating? 	ought to I have suffocated?
ought to you have suffocated?
ought to he have suffocated?
ought to we have suffocated?
ought to you have suffocated?
ought to they have suffocated? 	ought to I have been suffocating?
ought to you have been suffocating?
ought to he have been suffocating?
ought to we have been suffocating?
ought to you have been suffocating?
ought to they have been suffocating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to suffocate?
ought you not to suffocate?
ought he not to suffocate?
ought we not to suffocate?
ought you not to suffocate?
ought they not to suffocate? 	ought I not to be suffocating?
ought you not to be suffocating?
ought he not to be suffocating?
ought we not to be suffocating?
ought you not to be suffocating?
ought they not to be suffocating? 	ought I not to have suffocated?
ought you not to have suffocated?
ought he not to have suffocated?
ought we not to have suffocated?
ought you not to have suffocated?
ought they not to have suffocated? 	ought I not to have been suffocating?
ought you not to have been suffocating?
ought he not to have been suffocating?
ought we not to have been suffocating?
ought you not to have been suffocating?
ought they not to have been suffocating?