I can fidget you can fidget he can fidget we can fidget you can fidget they can fidget
V-ing form
I can be fidgeting you can be fidgeting he can be fidgeting we can be fidgeting you can be fidgeting they can be fidgeting
Perfect
I can have fidgeted you can have fidgeted he can have fidgeted we can have fidgeted you can have fidgeted they can have fidgeted
V-ing perfect
I can have been fidgeting you can have been fidgeting he can have been fidgeting we can have been fidgeting you can have been fidgeting they can have been fidgeting
Negation
Simple form
I cannot fidget you cannot fidget he cannot fidget we cannot fidget you cannot fidget they cannot fidget
V-ing form
I cannot be fidgeting you cannot be fidgeting he cannot be fidgeting we cannot be fidgeting you cannot be fidgeting they cannot be fidgeting
Perfect
I cannot have fidgeted you cannot have fidgeted he cannot have fidgeted we cannot have fidgeted you cannot have fidgeted they cannot have fidgeted
V-ing perfect
I cannot have been fidgeting you cannot have been fidgeting he cannot have been fidgeting we cannot have been fidgeting you cannot have been fidgeting they cannot have been fidgeting
Interrogative form
Simple form
can I fidget? can you fidget? can he fidget? can we fidget? can you fidget? can they fidget?
V-ing form
can I be fidgeting? can you be fidgeting? can he be fidgeting? can we be fidgeting? can you be fidgeting? can they be fidgeting?
Perfect
can I have fidgeted? can you have fidgeted? can he have fidgeted? can we have fidgeted? can you have fidgeted? can they have fidgeted?
V-ing perfect
can I have been fidgeting? can you have been fidgeting? can he have been fidgeting? can we have been fidgeting? can you have been fidgeting? can they have been fidgeting?
Interro-negative form
Simple form
can I not fidget? can you not fidget? can he not fidget? can we not fidget? can you not fidget? can they not fidget?
V-ing form
can I not be fidgeting? can you not be fidgeting? can he not be fidgeting? can we not be fidgeting? can you not be fidgeting? can they not be fidgeting?
Perfect
can I not have fidgeted? can you not have fidgeted? can he not have fidgeted? can we not have fidgeted? can you not have fidgeted? can they not have fidgeted?
V-ing perfect
can I not have been fidgeting? can you not have been fidgeting? can he not have been fidgeting? can we not have been fidgeting? can you not have been fidgeting? can they not have been fidgeting?