
Regular verb: amass - amassed - amassed
Simple form | V-ing form | 
| I'd amass you'd amass he'd amass we'd amass you'd amass they'd amass  | I'd be amassing you'd be amassing he'd be amassing we'd be amassing you'd be amassing they'd be amassing  | 
Perfect | V-ing perfect | 
| I should've amassed you should've amassed he should've amassed we should've amassed you should've amassed they should've amassed  | I should've been amassing you should've been amassing he should've been amassing we should've been amassing you should've been amassing they should've been amassing  | 
Simple form | V-ing form | 
| I shouldn't amass you shouldn't amass he shouldn't amass we shouldn't amass you shouldn't amass they shouldn't amass  | I shouldn't be amassing you shouldn't be amassing he shouldn't be amassing we shouldn't be amassing you shouldn't be amassing they shouldn't be amassing  | 
Perfect | V-ing perfect | 
| I shouldn't have amassed you shouldn't have amassed he shouldn't have amassed we shouldn't have amassed you shouldn't have amassed they shouldn't have amassed  | I shouldn't have been amassing you shouldn't have been amassing he shouldn't have been amassing we shouldn't have been amassing you shouldn't have been amassing they shouldn't have been amassing  | 
Simple form | V-ing form | 
| should I amass? should you amass? should he amass? should we amass? should you amass? should they amass?  | should I be amassing? should you be amassing? should he be amassing? should we be amassing? should you be amassing? should they be amassing?  | 
Perfect | V-ing perfect | 
| should I have amassed? should you have amassed? should he have amassed? should we have amassed? should you have amassed? should they have amassed?  | should I have been amassing? should you have been amassing? should he have been amassing? should we have been amassing? should you have been amassing? should they have been amassing?  | 
Simple form | V-ing form | 
| shouldn't I amass? shouldn't you amass? shouldn't he amass? shouldn't we amass? shouldn't you amass? shouldn't they amass?  | shouldn't I be amassing? shouldn't you be amassing? shouldn't he be amassing? shouldn't we be amassing? shouldn't you be amassing? shouldn't they be amassing?  | 
Perfect | V-ing perfect | 
| shouldn't I have amassed? shouldn't you have amassed? shouldn't he have amassed? shouldn't we have amassed? shouldn't you have amassed? shouldn't they have amassed?  | shouldn't I have been amassing? shouldn't you have been amassing? shouldn't he have been amassing? shouldn't we have been amassing? shouldn't you have been amassing? shouldn't they have been amassing?  |