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