English verb conjugation
MUST RUFFLE

Regular verb: ruffle - ruffled - ruffled

Affirmation

Simple form	V-ing form
I must ruffle you must ruffle she must ruffle we must ruffle you must ruffle they must ruffle	I must be ruffling you must be ruffling she must be ruffling we must be ruffling you must be ruffling they must be ruffling
Perfect	V-ing perfect
I must have ruffled you must have ruffled she must have ruffled we must have ruffled you must have ruffled they must have ruffled	I must have been ruffling you must have been ruffling she must have been ruffling we must have been ruffling you must have been ruffling they must have been ruffling

Negation

Simple form	V-ing form
I mustn't ruffle you mustn't ruffle she mustn't ruffle we mustn't ruffle you mustn't ruffle they mustn't ruffle	I mustn't be ruffling you mustn't be ruffling she mustn't be ruffling we mustn't be ruffling you mustn't be ruffling they mustn't be ruffling
Perfect	V-ing perfect
I mustn't have ruffled you mustn't have ruffled she mustn't have ruffled we mustn't have ruffled you mustn't have ruffled they mustn't have ruffled	I mustn't have been ruffling you mustn't have been ruffling she mustn't have been ruffling we mustn't have been ruffling you mustn't have been ruffling they mustn't have been ruffling

Interrogative form

Simple form	V-ing form
must I ruffle? must you ruffle? must she ruffle? must we ruffle? must you ruffle? must they ruffle?	must I be ruffling? must you be ruffling? must she be ruffling? must we be ruffling? must you be ruffling? must they be ruffling?
Perfect	V-ing perfect
must I have ruffled? must you have ruffled? must she have ruffled? must we have ruffled? must you have ruffled? must they have ruffled?	must I have been ruffling? must you have been ruffling? must she have been ruffling? must we have been ruffling? must you have been ruffling? must they have been ruffling?

Interro-negative form

Simple form	V-ing form
mustn't I ruffle? mustn't you ruffle? mustn't she ruffle? mustn't we ruffle? mustn't you ruffle? mustn't they ruffle?	mustn't I be ruffling? mustn't you be ruffling? mustn't she be ruffling? mustn't we be ruffling? mustn't you be ruffling? mustn't they be ruffling?
Perfect	V-ing perfect
mustn't I have ruffled? mustn't you have ruffled? mustn't she have ruffled? mustn't we have ruffled? mustn't you have ruffled? mustn't they have ruffled?	mustn't I have been ruffling? mustn't you have been ruffling? mustn't she have been ruffling? mustn't we have been ruffling? mustn't you have been ruffling? mustn't they have been ruffling?