I could fidget you could fidget she could fidget we could fidget you could fidget they could fidget
V-ing form
I could be fidgeting you could be fidgeting she could be fidgeting we could be fidgeting you could be fidgeting they could be fidgeting
Perfect
I could have fidgeted you could have fidgeted she could have fidgeted we could have fidgeted you could have fidgeted they could have fidgeted
V-ing perfect
I could have been fidgeting you could have been fidgeting she could have been fidgeting we could have been fidgeting you could have been fidgeting they could have been fidgeting
Negation
Simple form
I couldn't fidget you couldn't fidget she couldn't fidget we couldn't fidget you couldn't fidget they couldn't fidget
V-ing form
I couldn't be fidgeting you couldn't be fidgeting she couldn't be fidgeting we couldn't be fidgeting you couldn't be fidgeting they couldn't be fidgeting
Perfect
I couldn't have fidgeted you couldn't have fidgeted she couldn't have fidgeted we couldn't have fidgeted you couldn't have fidgeted they couldn't have fidgeted
V-ing perfect
I couldn't have been fidgeting you couldn't have been fidgeting she couldn't have been fidgeting we couldn't have been fidgeting you couldn't have been fidgeting they couldn't have been fidgeting
Interrogative form
Simple form
could I fidget? could you fidget? could she fidget? could we fidget? could you fidget? could they fidget?
V-ing form
could I be fidgeting? could you be fidgeting? could she be fidgeting? could we be fidgeting? could you be fidgeting? could they be fidgeting?
Perfect
could I have fidgeted? could you have fidgeted? could she have fidgeted? could we have fidgeted? could you have fidgeted? could they have fidgeted?
V-ing perfect
could I have been fidgeting? could you have been fidgeting? could she have been fidgeting? could we have been fidgeting? could you have been fidgeting? could they have been fidgeting?
Interro-negative form
Simple form
couldn't I fidget? couldn't you fidget? couldn't she fidget? couldn't we fidget? couldn't you fidget? couldn't they fidget?
V-ing form
couldn't I be fidgeting? couldn't you be fidgeting? couldn't she be fidgeting? couldn't we be fidgeting? couldn't you be fidgeting? couldn't they be fidgeting?
Perfect
couldn't I have fidgeted? couldn't you have fidgeted? couldn't she have fidgeted? couldn't we have fidgeted? couldn't you have fidgeted? couldn't they have fidgeted?
V-ing perfect
couldn't I have been fidgeting? couldn't you have been fidgeting? couldn't she have been fidgeting? couldn't we have been fidgeting? couldn't you have been fidgeting? couldn't they have been fidgeting?