I should gnaw you should gnaw he should gnaw we should gnaw you should gnaw they should gnaw
V-ing form
I should be gnawing you should be gnawing he should be gnawing we should be gnawing you should be gnawing they should be gnawing
Perfect
I should have gnawed you should have gnawed he should have gnawed we should have gnawed you should have gnawed they should have gnawed
V-ing perfect
I should have been gnawing you should have been gnawing he should have been gnawing we should have been gnawing you should have been gnawing they should have been gnawing
Negation
Simple form
I should not gnaw you should not gnaw he should not gnaw we should not gnaw you should not gnaw they should not gnaw
V-ing form
I should not be gnawing you should not be gnawing he should not be gnawing we should not be gnawing you should not be gnawing they should not be gnawing
Perfect
I should not have gnawed you should not have gnawed he should not have gnawed we should not have gnawed you should not have gnawed they should not have gnawed
V-ing perfect
I should not have been gnawing you should not have been gnawing he should not have been gnawing we should not have been gnawing you should not have been gnawing they should not have been gnawing
Interrogative form
Simple form
should I gnaw? should you gnaw? should he gnaw? should we gnaw? should you gnaw? should they gnaw?
V-ing form
should I be gnawing? should you be gnawing? should he be gnawing? should we be gnawing? should you be gnawing? should they be gnawing?
Perfect
should I have gnawed? should you have gnawed? should he have gnawed? should we have gnawed? should you have gnawed? should they have gnawed?
V-ing perfect
should I have been gnawing? should you have been gnawing? should he have been gnawing? should we have been gnawing? should you have been gnawing? should they have been gnawing?
Interro-negative form
Simple form
should I not gnaw? should you not gnaw? should he not gnaw? should we not gnaw? should you not gnaw? should they not gnaw?
V-ing form
should I not be gnawing? should you not be gnawing? should he not be gnawing? should we not be gnawing? should you not be gnawing? should they not be gnawing?
Perfect
should I not have gnawed? should you not have gnawed? should he not have gnawed? should we not have gnawed? should you not have gnawed? should they not have gnawed?
V-ing perfect
should I not have been gnawing? should you not have been gnawing? should he not have been gnawing? should we not have been gnawing? should you not have been gnawing? should they not have been gnawing?