ought to crackle
Regular verb: crackle - crackled- crackled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to crackle
you ought to crackle
he ought to crackle
we ought to crackle
you ought to crackle
they ought to crackle 	I ought to be crackling
you ought to be crackling
he ought to be crackling
we ought to be crackling
you ought to be crackling
they ought to be crackling	I ought to have crackled
you ought to have crackled
he ought to have crackled
we ought to have crackled
you ought to have crackled
they ought to have crackled	I ought to have been crackling
you ought to have been crackling
he ought to have been crackling
we ought to have been crackling
you ought to have been crackling
they ought to have been crackling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to crackle
you ought not to crackle
he ought not to crackle
we ought not to crackle
you ought not to crackle
they ought not to crackle 	I ought not to crackling
you ought not to crackling
he ought not to crackling
we ought not to crackling
you ought not to crackling
they ought not to crackling	I ought not to have crackled
you ought not to have crackled
he ought not to have crackled
we ought not to have crackled
you ought not to have crackled
they ought not to have crackled	I ought not to have been crackling
you ought not to have been crackling
he ought not to have been crackling
we ought not to have been crackling
you ought not to have been crackling
they ought not to have been crackling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I crackle?
ought to you crackle?
ought to he crackle?
ought to we crackle?
ought to you crackle?
ought to they crackle? 	ought to I be crackling?
ought to you be crackling?
ought to he be crackling?
ought to we be crackling?
ought to you be crackling?
ought to they be crackling? 	ought to I have crackled?
ought to you have crackled?
ought to he have crackled?
ought to we have crackled?
ought to you have crackled?
ought to they have crackled? 	ought to I have been crackling?
ought to you have been crackling?
ought to he have been crackling?
ought to we have been crackling?
ought to you have been crackling?
ought to they have been crackling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to crackle?
ought you not to crackle?
ought he not to crackle?
ought we not to crackle?
ought you not to crackle?
ought they not to crackle? 	ought I not to be crackling?
ought you not to be crackling?
ought he not to be crackling?
ought we not to be crackling?
ought you not to be crackling?
ought they not to be crackling? 	ought I not to have crackled?
ought you not to have crackled?
ought he not to have crackled?
ought we not to have crackled?
ought you not to have crackled?
ought they not to have crackled? 	ought I not to have been crackling?
ought you not to have been crackling?
ought he not to have been crackling?
ought we not to have been crackling?
ought you not to have been crackling?
ought they not to have been crackling?