can nab
Regular verb: nab - nabbed- nabbed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can nab
you can nab
she can nab
we can nab
you can nab
they can nab 	I can be nabbing
you can be nabbing
she can be nabbing
we can be nabbing
you can be nabbing
they can be nabbing	I can have nabbed
you can have nabbed
she can have nabbed
we can have nabbed
you can have nabbed
they can have nabbed	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 	V-ing form 	Perfect 	V-ing perfect 	
I can't nab
you can't nab
she can't nab
we can't nab
you can't nab
they can't nab 	I can't be nabbing
you can't be nabbing
she can't be nabbing
we can't be nabbing
you can't be nabbing
they can't be nabbing	I can't have nabbed
you can't have nabbed
she can't have nabbed
we can't have nabbed
you can't have nabbed
they can't have nabbed	I can't have been nabbing
you can't have been nabbing
she can't have been nabbing
we can't have been nabbing
you can't have been nabbing
they can't have been nabbing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I nab?
can you nab?
can she nab?
can we nab?
can you nab?
can they nab? 	can I be nabbing?
can you be nabbing?
can she be nabbing?
can we be nabbing?
can you be nabbing?
can they be nabbing? 	can I have nabbed?
can you have nabbed?
can she have nabbed?
can we have nabbed?
can you have nabbed?
can they have nabbed? 	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 	V-ing form 	Perfect 	V-ing perfect 	
can't I nab?
can't you nab?
can't she nab?
can't we nab?
can't you nab?
can't they nab? 	can't I be nabbing?
can't you be nabbing?
can't she be nabbing?
can't we be nabbing?
can't you be nabbing?
can't they be nabbing? 	can't I have nabbed?
can't you have nabbed?
can't she have nabbed?
can't we have nabbed?
can't you have nabbed?
can't they have nabbed? 	can't I have been nabbing?
can't you have been nabbing?
can't she have been nabbing?
can't we have been nabbing?
can't you have been nabbing?
can't they have been nabbing?