ought to mask
Regular verb: mask - masked- masked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to mask
you ought to mask
she ought to mask
we ought to mask
you ought to mask
they ought to mask 	I ought to be masking
you ought to be masking
she ought to be masking
we ought to be masking
you ought to be masking
they ought to be masking	I ought to have masked
you ought to have masked
she ought to have masked
we ought to have masked
you ought to have masked
they ought to have masked	I ought to have been masking
you ought to have been masking
she ought to have been masking
we ought to have been masking
you ought to have been masking
they ought to have been masking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to mask
you oughtn't to mask
she oughtn't to mask
we oughtn't to mask
you oughtn't to mask
they oughtn't to mask 	I oughtn't to be masking
you oughtn't to be masking
she oughtn't to be masking
we oughtn't to be masking
you oughtn't to be masking
they oughtn't to be masking	I oughtn't to have masked
you oughtn't to have masked
she oughtn't to have masked
we oughtn't to have masked
you oughtn't to have masked
they oughtn't to have masked	I oughtn't to have been masking
you oughtn't to have been masking
she oughtn't to have been masking
we oughtn't to have been masking
you oughtn't to have been masking
they oughtn't to have been masking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I mask?
ought to you mask?
ought to she mask?
ought to we mask?
ought to you mask?
ought to they mask? 	ought to I be masking?
ought to you be masking?
ought to she be masking?
ought to we be masking?
ought to you be masking?
ought to they be masking? 	ought to I have masked?
ought to you have masked?
ought to she have masked?
ought to we have masked?
ought to you have masked?
ought to they have masked? 	ought to I have been masking?
ought to you have been masking?
ought to she have been masking?
ought to we have been masking?
ought to you have been masking?
ought to they have been masking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to mask?
oughtn't you to mask?
oughtn't she to mask?
oughtn't we to mask?
oughtn't you to mask?
oughtn't they to mask? 	oughtn't I to be masking?
oughtn't you to be masking?
oughtn't she to be masking?
oughtn't we to be masking?
oughtn't you to be masking?
oughtn't they to be masking? 	oughtn't I to have masked?
oughtn't you to have masked?
oughtn't she to have masked?
oughtn't we to have masked?
oughtn't you to have masked?
oughtn't they to have masked? 	oughtn't I to have been masking?
oughtn't you to have been masking?
oughtn't she to have been masking?
oughtn't we to have been masking?
oughtn't you to have been masking?
oughtn't they to have been masking?