
Regular verb: book - booked - booked
Simple form | V-ing form | 
| I'd book you'd book she'd book we'd book you'd book they'd book  | I'd be booking you'd be booking she'd be booking we'd be booking you'd be booking they'd be booking  | 
Perfect | V-ing perfect | 
| I should've booked you should've booked she should've booked we should've booked you should've booked they should've booked  | I should've been booking you should've been booking she should've been booking we should've been booking you should've been booking they should've been booking  | 
Simple form | V-ing form | 
| I shouldn't book you shouldn't book she shouldn't book we shouldn't book you shouldn't book they shouldn't book  | I shouldn't be booking you shouldn't be booking she shouldn't be booking we shouldn't be booking you shouldn't be booking they shouldn't be booking  | 
Perfect | V-ing perfect | 
| I shouldn't have booked you shouldn't have booked she shouldn't have booked we shouldn't have booked you shouldn't have booked they shouldn't have booked  | I shouldn't have been booking you shouldn't have been booking she shouldn't have been booking we shouldn't have been booking you shouldn't have been booking they shouldn't have been booking  | 
Simple form | V-ing form | 
| should I book? should you book? should she book? should we book? should you book? should they book?  | should I be booking? should you be booking? should she be booking? should we be booking? should you be booking? should they be booking?  | 
Perfect | V-ing perfect | 
| should I have booked? should you have booked? should she have booked? should we have booked? should you have booked? should they have booked?  | should I have been booking? should you have been booking? should she have been booking? should we have been booking? should you have been booking? should they have been booking?  | 
Simple form | V-ing form | 
| shouldn't I book? shouldn't you book? shouldn't she book? shouldn't we book? shouldn't you book? shouldn't they book?  | shouldn't I be booking? shouldn't you be booking? shouldn't she be booking? shouldn't we be booking? shouldn't you be booking? shouldn't they be booking?  | 
Perfect | V-ing perfect | 
| shouldn't I have booked? shouldn't you have booked? shouldn't she have booked? shouldn't we have booked? shouldn't you have booked? shouldn't they have booked?  | shouldn't I have been booking? shouldn't you have been booking? shouldn't she have been booking? shouldn't we have been booking? shouldn't you have been booking? shouldn't they have been booking?  |