I may shudder you may shudder he may shudder we may shudder you may shudder they may shudder
V-ing form
I may be shuddering you may be shuddering he may be shuddering we may be shuddering you may be shuddering they may be shuddering
Perfect
I may have shuddered you may have shuddered he may have shuddered we may have shuddered you may have shuddered they may have shuddered
V-ing perfect
I may have been shuddering you may have been shuddering he may have been shuddering we may have been shuddering you may have been shuddering they may have been shuddering
Negation
Simple form
I may not shudder you may not shudder he may not shudder we may not shudder you may not shudder they may not shudder
V-ing form
I may not be shuddering you may not be shuddering he may not be shuddering we may not be shuddering you may not be shuddering they may not be shuddering
Perfect
I may not have shuddered you may not have shuddered he may not have shuddered we may not have shuddered you may not have shuddered they may not have shuddered
V-ing perfect
I may not have been shuddering you may not have been shuddering he may not have been shuddering we may not have been shuddering you may not have been shuddering they may not have been shuddering
Interrogative form
Simple form
may I shudder? may you shudder? may he shudder? may we shudder? may you shudder? may they shudder?
V-ing form
may I be shuddering? may you be shuddering? may he be shuddering? may we be shuddering? may you be shuddering? may they be shuddering?
Perfect
may I have shuddered? may you have shuddered? may he have shuddered? may we have shuddered? may you have shuddered? may they have shuddered?
V-ing perfect
may I have been shuddering? may you have been shuddering? may he have been shuddering? may we have been shuddering? may you have been shuddering? may they have been shuddering?
Interro-negative form
Simple form
may I not shudder? may you not shudder? may he not shudder? may we not shudder? may you not shudder? may they not shudder?
V-ing form
may I not be shuddering? may you not be shuddering? may he not be shuddering? may we not be shuddering? may you not be shuddering? may they not be shuddering?
Perfect
may I not have shuddered? may you not have shuddered? may he not have shuddered? may we not have shuddered? may you not have shuddered? may they not have shuddered?
V-ing perfect
may I not have been shuddering? may you not have been shuddering? may he not have been shuddering? may we not have been shuddering? may you not have been shuddering? may they not have been shuddering?