
Regular verb: explore - explored - explored
Simple form | V-ing form | 
| I must explore you must explore she must explore we must explore you must explore they must explore  | I must be exploring you must be exploring she must be exploring we must be exploring you must be exploring they must be exploring  | 
Perfect | V-ing perfect | 
| I must have explored you must have explored she must have explored we must have explored you must have explored they must have explored  | I must have been exploring you must have been exploring she must have been exploring we must have been exploring you must have been exploring they must have been exploring  | 
Simple form | V-ing form | 
| I mustn't explore you mustn't explore she mustn't explore we mustn't explore you mustn't explore they mustn't explore  | I mustn't be exploring you mustn't be exploring she mustn't be exploring we mustn't be exploring you mustn't be exploring they mustn't be exploring  | 
Perfect | V-ing perfect | 
| I mustn't have explored you mustn't have explored she mustn't have explored we mustn't have explored you mustn't have explored they mustn't have explored  | I mustn't have been exploring you mustn't have been exploring she mustn't have been exploring we mustn't have been exploring you mustn't have been exploring they mustn't have been exploring  | 
Simple form | V-ing form | 
| must I explore? must you explore? must she explore? must we explore? must you explore? must they explore?  | must I be exploring? must you be exploring? must she be exploring? must we be exploring? must you be exploring? must they be exploring?  | 
Perfect | V-ing perfect | 
| must I have explored? must you have explored? must she have explored? must we have explored? must you have explored? must they have explored?  | must I have been exploring? must you have been exploring? must she have been exploring? must we have been exploring? must you have been exploring? must they have been exploring?  | 
Simple form | V-ing form | 
| mustn't I explore? mustn't you explore? mustn't she explore? mustn't we explore? mustn't you explore? mustn't they explore?  | mustn't I be exploring? mustn't you be exploring? mustn't she be exploring? mustn't we be exploring? mustn't you be exploring? mustn't they be exploring?  | 
Perfect | V-ing perfect | 
| mustn't I have explored? mustn't you have explored? mustn't she have explored? mustn't we have explored? mustn't you have explored? mustn't they have explored?  | mustn't I have been exploring? mustn't you have been exploring? mustn't she have been exploring? mustn't we have been exploring? mustn't you have been exploring? mustn't they have been exploring?  |