ought to scumble
Regular verb: scumble - scumbled- scumbled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to scumble
you ought to scumble
she ought to scumble
we ought to scumble
you ought to scumble
they ought to scumble 	I ought to be scumbling
you ought to be scumbling
she ought to be scumbling
we ought to be scumbling
you ought to be scumbling
they ought to be scumbling	I ought to have scumbled
you ought to have scumbled
she ought to have scumbled
we ought to have scumbled
you ought to have scumbled
they ought to have scumbled	I ought to have been scumbling
you ought to have been scumbling
she ought to have been scumbling
we ought to have been scumbling
you ought to have been scumbling
they ought to have been scumbling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to scumble
you oughtn't to scumble
she oughtn't to scumble
we oughtn't to scumble
you oughtn't to scumble
they oughtn't to scumble 	I oughtn't to be scumbling
you oughtn't to be scumbling
she oughtn't to be scumbling
we oughtn't to be scumbling
you oughtn't to be scumbling
they oughtn't to be scumbling	I oughtn't to have scumbled
you oughtn't to have scumbled
she oughtn't to have scumbled
we oughtn't to have scumbled
you oughtn't to have scumbled
they oughtn't to have scumbled	I oughtn't to have been scumbling
you oughtn't to have been scumbling
she oughtn't to have been scumbling
we oughtn't to have been scumbling
you oughtn't to have been scumbling
they oughtn't to have been scumbling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I scumble?
ought to you scumble?
ought to she scumble?
ought to we scumble?
ought to you scumble?
ought to they scumble? 	ought to I be scumbling?
ought to you be scumbling?
ought to she be scumbling?
ought to we be scumbling?
ought to you be scumbling?
ought to they be scumbling? 	ought to I have scumbled?
ought to you have scumbled?
ought to she have scumbled?
ought to we have scumbled?
ought to you have scumbled?
ought to they have scumbled? 	ought to I have been scumbling?
ought to you have been scumbling?
ought to she have been scumbling?
ought to we have been scumbling?
ought to you have been scumbling?
ought to they have been scumbling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to scumble?
oughtn't you to scumble?
oughtn't she to scumble?
oughtn't we to scumble?
oughtn't you to scumble?
oughtn't they to scumble? 	oughtn't I to be scumbling?
oughtn't you to be scumbling?
oughtn't she to be scumbling?
oughtn't we to be scumbling?
oughtn't you to be scumbling?
oughtn't they to be scumbling? 	oughtn't I to have scumbled?
oughtn't you to have scumbled?
oughtn't she to have scumbled?
oughtn't we to have scumbled?
oughtn't you to have scumbled?
oughtn't they to have scumbled? 	oughtn't I to have been scumbling?
oughtn't you to have been scumbling?
oughtn't she to have been scumbling?
oughtn't we to have been scumbling?
oughtn't you to have been scumbling?
oughtn't they to have been scumbling?