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