I can spurn you can spurn she can spurn we can spurn you can spurn they can spurn
V-ing form
I can be spurning you can be spurning she can be spurning we can be spurning you can be spurning they can be spurning
Perfect
I can have spurned you can have spurned she can have spurned we can have spurned you can have spurned they can have spurned
V-ing perfect
I can have been spurning you can have been spurning she can have been spurning we can have been spurning you can have been spurning they can have been spurning
Negation
Simple form
I can't spurn you can't spurn she can't spurn we can't spurn you can't spurn they can't spurn
V-ing form
I can't be spurning you can't be spurning she can't be spurning we can't be spurning you can't be spurning they can't be spurning
Perfect
I can't have spurned you can't have spurned she can't have spurned we can't have spurned you can't have spurned they can't have spurned
V-ing perfect
I can't have been spurning you can't have been spurning she can't have been spurning we can't have been spurning you can't have been spurning they can't have been spurning
Interrogative form
Simple form
can I spurn? can you spurn? can she spurn? can we spurn? can you spurn? can they spurn?
V-ing form
can I be spurning? can you be spurning? can she be spurning? can we be spurning? can you be spurning? can they be spurning?
Perfect
can I have spurned? can you have spurned? can she have spurned? can we have spurned? can you have spurned? can they have spurned?
V-ing perfect
can I have been spurning? can you have been spurning? can she have been spurning? can we have been spurning? can you have been spurning? can they have been spurning?
Interro-negative form
Simple form
can't I spurn? can't you spurn? can't she spurn? can't we spurn? can't you spurn? can't they spurn?
V-ing form
can't I be spurning? can't you be spurning? can't she be spurning? can't we be spurning? can't you be spurning? can't they be spurning?
Perfect
can't I have spurned? can't you have spurned? can't she have spurned? can't we have spurned? can't you have spurned? can't they have spurned?
V-ing perfect
can't I have been spurning? can't you have been spurning? can't she have been spurning? can't we have been spurning? can't you have been spurning? can't they have been spurning?