
Regular verb: rain - rained - rained
Simple form | V-ing form | 
| - - it'd rain - - -  | - - it'd be raining - - -  | 
Perfect | V-ing perfect | 
| - - it would've rained - - -  | - - it would've been raining - - -  | 
Simple form | V-ing form | 
| - - it wouldn't rain - - -  | - - it wouldn't be raining - - -  | 
Perfect | V-ing perfect | 
| - - it wouldn't have rained - - -  | - - it wouldn't have been raining - - -  | 
Simple form | V-ing form | 
| - - would it rain? - - -  | - - would it be raining? - - -  | 
Perfect | V-ing perfect | 
| - - would it have rained? - - -  | - - would it have been raining? - - -  | 
Simple form | V-ing form | 
| - - wouldn't it rain? - - -  | - - wouldn't it be raining? - - -  | 
Perfect | V-ing perfect | 
| - - wouldn't it have rained? - - -  | - - wouldn't it have been raining? - - -  |