English verb conjugation
MUST SIMPER

Regular verb: simper - simpered - simpered

Affirmation

Simple form	V-ing form
I must simper you must simper he must simper we must simper you must simper they must simper	I must be simpering you must be simpering he must be simpering we must be simpering you must be simpering they must be simpering
Perfect	V-ing perfect
I must have simpered you must have simpered he must have simpered we must have simpered you must have simpered they must have simpered	I must have been simpering you must have been simpering he must have been simpering we must have been simpering you must have been simpering they must have been simpering

Negation

Simple form	V-ing form
I mustn't simper you mustn't simper he mustn't simper we mustn't simper you mustn't simper they mustn't simper	I mustn't be simpering you mustn't be simpering he mustn't be simpering we mustn't be simpering you mustn't be simpering they mustn't be simpering
Perfect	V-ing perfect
I mustn't have simpered you mustn't have simpered he mustn't have simpered we mustn't have simpered you mustn't have simpered they mustn't have simpered	I mustn't have been simpering you mustn't have been simpering he mustn't have been simpering we mustn't have been simpering you mustn't have been simpering they mustn't have been simpering

Interrogative form

Simple form	V-ing form
must I simper? must you simper? must he simper? must we simper? must you simper? must they simper?	must I be simpering? must you be simpering? must he be simpering? must we be simpering? must you be simpering? must they be simpering?
Perfect	V-ing perfect
must I have simpered? must you have simpered? must he have simpered? must we have simpered? must you have simpered? must they have simpered?	must I have been simpering? must you have been simpering? must he have been simpering? must we have been simpering? must you have been simpering? must they have been simpering?

Interro-negative form

Simple form	V-ing form
mustn't I simper? mustn't you simper? mustn't he simper? mustn't we simper? mustn't you simper? mustn't they simper?	mustn't I be simpering? mustn't you be simpering? mustn't he be simpering? mustn't we be simpering? mustn't you be simpering? mustn't they be simpering?
Perfect	V-ing perfect
mustn't I have simpered? mustn't you have simpered? mustn't he have simpered? mustn't we have simpered? mustn't you have simpered? mustn't they have simpered?	mustn't I have been simpering? mustn't you have been simpering? mustn't he have been simpering? mustn't we have been simpering? mustn't you have been simpering? mustn't they have been simpering?