I must splash you must splash he must splash we must splash you must splash they must splash
V-ing form
I must be splashing you must be splashing he must be splashing we must be splashing you must be splashing they must be splashing
Perfect
I must have splashed you must have splashed he must have splashed we must have splashed you must have splashed they must have splashed
V-ing perfect
I must have been splashing you must have been splashing he must have been splashing we must have been splashing you must have been splashing they must have been splashing
Negation
Simple form
I mustn't splash you mustn't splash he mustn't splash we mustn't splash you mustn't splash they mustn't splash
V-ing form
I mustn't be splashing you mustn't be splashing he mustn't be splashing we mustn't be splashing you mustn't be splashing they mustn't be splashing
Perfect
I mustn't have splashed you mustn't have splashed he mustn't have splashed we mustn't have splashed you mustn't have splashed they mustn't have splashed
V-ing perfect
I mustn't have been splashing you mustn't have been splashing he mustn't have been splashing we mustn't have been splashing you mustn't have been splashing they mustn't have been splashing
Interrogative form
Simple form
must I splash? must you splash? must he splash? must we splash? must you splash? must they splash?
V-ing form
must I be splashing? must you be splashing? must he be splashing? must we be splashing? must you be splashing? must they be splashing?
Perfect
must I have splashed? must you have splashed? must he have splashed? must we have splashed? must you have splashed? must they have splashed?
V-ing perfect
must I have been splashing? must you have been splashing? must he have been splashing? must we have been splashing? must you have been splashing? must they have been splashing?
Interro-negative form
Simple form
mustn't I splash? mustn't you splash? mustn't he splash? mustn't we splash? mustn't you splash? mustn't they splash?
V-ing form
mustn't I be splashing? mustn't you be splashing? mustn't he be splashing? mustn't we be splashing? mustn't you be splashing? mustn't they be splashing?
Perfect
mustn't I have splashed? mustn't you have splashed? mustn't he have splashed? mustn't we have splashed? mustn't you have splashed? mustn't they have splashed?
V-ing perfect
mustn't I have been splashing? mustn't you have been splashing? mustn't he have been splashing? mustn't we have been splashing? mustn't you have been splashing? mustn't they have been splashing?