should skin
Regular verb: skin - skinned- skinned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd skin
you'd skin
she'd skin
we'd skin
you'd skin
they'd skin 	I'd be skinning
you'd be skinning
she'd be skinning
we'd be skinning
you'd be skinning
they'd be skinning	I should've skinned
you should've skinned
she should've skinned
we should've skinned
you should've skinned
they should've skinned	I should've been skinning
you should've been skinning
she should've been skinning
we should've been skinning
you should've been skinning
they should've been skinning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't skin
you shouldn't skin
she shouldn't skin
we shouldn't skin
you shouldn't skin
they shouldn't skin 	I shouldn't be skinning
you shouldn't be skinning
she shouldn't be skinning
we shouldn't be skinning
you shouldn't be skinning
they shouldn't be skinning	I shouldn't have skinned
you shouldn't have skinned
she shouldn't have skinned
we shouldn't have skinned
you shouldn't have skinned
they shouldn't have skinned	I shouldn't have been skinning
you shouldn't have been skinning
she shouldn't have been skinning
we shouldn't have been skinning
you shouldn't have been skinning
they shouldn't have been skinning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I skin?
should you skin?
should she skin?
should we skin?
should you skin?
should they skin? 	should I be skinning?
should you be skinning?
should she be skinning?
should we be skinning?
should you be skinning?
should they be skinning? 	should I have skinned?
should you have skinned?
should she have skinned?
should we have skinned?
should you have skinned?
should they have skinned? 	should I have been skinning?
should you have been skinning?
should she have been skinning?
should we have been skinning?
should you have been skinning?
should they have been skinning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I skin?
shouldn't you skin?
shouldn't she skin?
shouldn't we skin?
shouldn't you skin?
shouldn't they skin? 	shouldn't I be skinning?
shouldn't you be skinning?
shouldn't she be skinning?
shouldn't we be skinning?
shouldn't you be skinning?
shouldn't they be skinning? 	shouldn't I have skinned?
shouldn't you have skinned?
shouldn't she have skinned?
shouldn't we have skinned?
shouldn't you have skinned?
shouldn't they have skinned? 	shouldn't I have been skinning?
shouldn't you have been skinning?
shouldn't she have been skinning?
shouldn't we have been skinning?
shouldn't you have been skinning?
shouldn't they have been skinning?