I can counterfeit you can counterfeit she can counterfeit we can counterfeit you can counterfeit they can counterfeit
V-ing form
I can be counterfeiting you can be counterfeiting she can be counterfeiting we can be counterfeiting you can be counterfeiting they can be counterfeiting
Perfect
I can have counterfeited you can have counterfeited she can have counterfeited we can have counterfeited you can have counterfeited they can have counterfeited
V-ing perfect
I can have been counterfeiting you can have been counterfeiting she can have been counterfeiting we can have been counterfeiting you can have been counterfeiting they can have been counterfeiting
Negation
Simple form
I cannot counterfeit you cannot counterfeit she cannot counterfeit we cannot counterfeit you cannot counterfeit they cannot counterfeit
V-ing form
I cannot be counterfeiting you cannot be counterfeiting she cannot be counterfeiting we cannot be counterfeiting you cannot be counterfeiting they cannot be counterfeiting
Perfect
I cannot have counterfeited you cannot have counterfeited she cannot have counterfeited we cannot have counterfeited you cannot have counterfeited they cannot have counterfeited
V-ing perfect
I cannot have been counterfeiting you cannot have been counterfeiting she cannot have been counterfeiting we cannot have been counterfeiting you cannot have been counterfeiting they cannot have been counterfeiting
Interrogative form
Simple form
can I counterfeit? can you counterfeit? can she counterfeit? can we counterfeit? can you counterfeit? can they counterfeit?
V-ing form
can I be counterfeiting? can you be counterfeiting? can she be counterfeiting? can we be counterfeiting? can you be counterfeiting? can they be counterfeiting?
Perfect
can I have counterfeited? can you have counterfeited? can she have counterfeited? can we have counterfeited? can you have counterfeited? can they have counterfeited?
V-ing perfect
can I have been counterfeiting? can you have been counterfeiting? can she have been counterfeiting? can we have been counterfeiting? can you have been counterfeiting? can they have been counterfeiting?
Interro-negative form
Simple form
can I not counterfeit? can you not counterfeit? can she not counterfeit? can we not counterfeit? can you not counterfeit? can they not counterfeit?
V-ing form
can I not be counterfeiting? can you not be counterfeiting? can she not be counterfeiting? can we not be counterfeiting? can you not be counterfeiting? can they not be counterfeiting?
Perfect
can I not have counterfeited? can you not have counterfeited? can she not have counterfeited? can we not have counterfeited? can you not have counterfeited? can they not have counterfeited?
V-ing perfect
can I not have been counterfeiting? can you not have been counterfeiting? can she not have been counterfeiting? can we not have been counterfeiting? can you not have been counterfeiting? can they not have been counterfeiting?