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