I can nab you can nab she can nab we can nab you can nab they can nab
V-ing form
I can be nabbing you can be nabbing she can be nabbing we can be nabbing you can be nabbing they can be nabbing
Perfect
I can have nabbed you can have nabbed she can have nabbed we can have nabbed you can have nabbed they can have nabbed
V-ing perfect
I can have been nabbing you can have been nabbing she can have been nabbing we can have been nabbing you can have been nabbing they can have been nabbing
Negation
Simple form
I cannot nab you cannot nab she cannot nab we cannot nab you cannot nab they cannot nab
V-ing form
I cannot be nabbing you cannot be nabbing she cannot be nabbing we cannot be nabbing you cannot be nabbing they cannot be nabbing
Perfect
I cannot have nabbed you cannot have nabbed she cannot have nabbed we cannot have nabbed you cannot have nabbed they cannot have nabbed
V-ing perfect
I cannot have been nabbing you cannot have been nabbing she cannot have been nabbing we cannot have been nabbing you cannot have been nabbing they cannot have been nabbing
Interrogative form
Simple form
can I nab? can you nab? can she nab? can we nab? can you nab? can they nab?
V-ing form
can I be nabbing? can you be nabbing? can she be nabbing? can we be nabbing? can you be nabbing? can they be nabbing?
Perfect
can I have nabbed? can you have nabbed? can she have nabbed? can we have nabbed? can you have nabbed? can they have nabbed?
V-ing perfect
can I have been nabbing? can you have been nabbing? can she have been nabbing? can we have been nabbing? can you have been nabbing? can they have been nabbing?
Interro-negative form
Simple form
can I not nab? can you not nab? can she not nab? can we not nab? can you not nab? can they not nab?
V-ing form
can I not be nabbing? can you not be nabbing? can she not be nabbing? can we not be nabbing? can you not be nabbing? can they not be nabbing?
Perfect
can I not have nabbed? can you not have nabbed? can she not have nabbed? can we not have nabbed? can you not have nabbed? can they not have nabbed?
V-ing perfect
can I not have been nabbing? can you not have been nabbing? can she not have been nabbing? can we not have been nabbing? can you not have been nabbing? can they not have been nabbing?