I must dissolve you must dissolve she must dissolve we must dissolve you must dissolve they must dissolve
V-ing form
I must be dissolving you must be dissolving she must be dissolving we must be dissolving you must be dissolving they must be dissolving
Perfect
I must have dissolved you must have dissolved she must have dissolved we must have dissolved you must have dissolved they must have dissolved
V-ing perfect
I must have been dissolving you must have been dissolving she must have been dissolving we must have been dissolving you must have been dissolving they must have been dissolving
Negation
Simple form
I mustn't dissolve you mustn't dissolve she mustn't dissolve we mustn't dissolve you mustn't dissolve they mustn't dissolve
V-ing form
I mustn't be dissolving you mustn't be dissolving she mustn't be dissolving we mustn't be dissolving you mustn't be dissolving they mustn't be dissolving
Perfect
I mustn't have dissolved you mustn't have dissolved she mustn't have dissolved we mustn't have dissolved you mustn't have dissolved they mustn't have dissolved
V-ing perfect
I mustn't have been dissolving you mustn't have been dissolving she mustn't have been dissolving we mustn't have been dissolving you mustn't have been dissolving they mustn't have been dissolving
Interrogative form
Simple form
must I dissolve? must you dissolve? must she dissolve? must we dissolve? must you dissolve? must they dissolve?
V-ing form
must I be dissolving? must you be dissolving? must she be dissolving? must we be dissolving? must you be dissolving? must they be dissolving?
Perfect
must I have dissolved? must you have dissolved? must she have dissolved? must we have dissolved? must you have dissolved? must they have dissolved?
V-ing perfect
must I have been dissolving? must you have been dissolving? must she have been dissolving? must we have been dissolving? must you have been dissolving? must they have been dissolving?
Interro-negative form
Simple form
mustn't I dissolve? mustn't you dissolve? mustn't she dissolve? mustn't we dissolve? mustn't you dissolve? mustn't they dissolve?
V-ing form
mustn't I be dissolving? mustn't you be dissolving? mustn't she be dissolving? mustn't we be dissolving? mustn't you be dissolving? mustn't they be dissolving?
Perfect
mustn't I have dissolved? mustn't you have dissolved? mustn't she have dissolved? mustn't we have dissolved? mustn't you have dissolved? mustn't they have dissolved?
V-ing perfect
mustn't I have been dissolving? mustn't you have been dissolving? mustn't she have been dissolving? mustn't we have been dissolving? mustn't you have been dissolving? mustn't they have been dissolving?