English verb conjugation
MUST CLAMBER

Regular verb: clamber - clambered - clambered

Affirmation

Simple form	V-ing form
I must clamber you must clamber he must clamber we must clamber you must clamber they must clamber	I must be clambering you must be clambering he must be clambering we must be clambering you must be clambering they must be clambering
Perfect	V-ing perfect
I must have clambered you must have clambered he must have clambered we must have clambered you must have clambered they must have clambered	I must have been clambering you must have been clambering he must have been clambering we must have been clambering you must have been clambering they must have been clambering

Negation

Simple form	V-ing form
I mustn't clamber you mustn't clamber he mustn't clamber we mustn't clamber you mustn't clamber they mustn't clamber	I mustn't be clambering you mustn't be clambering he mustn't be clambering we mustn't be clambering you mustn't be clambering they mustn't be clambering
Perfect	V-ing perfect
I mustn't have clambered you mustn't have clambered he mustn't have clambered we mustn't have clambered you mustn't have clambered they mustn't have clambered	I mustn't have been clambering you mustn't have been clambering he mustn't have been clambering we mustn't have been clambering you mustn't have been clambering they mustn't have been clambering

Interrogative form

Simple form	V-ing form
must I clamber? must you clamber? must he clamber? must we clamber? must you clamber? must they clamber?	must I be clambering? must you be clambering? must he be clambering? must we be clambering? must you be clambering? must they be clambering?
Perfect	V-ing perfect
must I have clambered? must you have clambered? must he have clambered? must we have clambered? must you have clambered? must they have clambered?	must I have been clambering? must you have been clambering? must he have been clambering? must we have been clambering? must you have been clambering? must they have been clambering?

Interro-negative form

Simple form	V-ing form
mustn't I clamber? mustn't you clamber? mustn't he clamber? mustn't we clamber? mustn't you clamber? mustn't they clamber?	mustn't I be clambering? mustn't you be clambering? mustn't he be clambering? mustn't we be clambering? mustn't you be clambering? mustn't they be clambering?
Perfect	V-ing perfect
mustn't I have clambered? mustn't you have clambered? mustn't he have clambered? mustn't we have clambered? mustn't you have clambered? mustn't they have clambered?	mustn't I have been clambering? mustn't you have been clambering? mustn't he have been clambering? mustn't we have been clambering? mustn't you have been clambering? mustn't they have been clambering?