English verb conjugation
MUST SWEAR

Irregular verb: swear - swore - sworn

Affirmation

Simple form	V-ing form
I must swear you must swear she must swear we must swear you must swear they must swear	I must be swearing you must be swearing she must be swearing we must be swearing you must be swearing they must be swearing
Perfect	V-ing perfect
I must have sworn you must have sworn she must have sworn we must have sworn you must have sworn they must have sworn	I must have been swearing you must have been swearing she must have been swearing we must have been swearing you must have been swearing they must have been swearing

Negation

Simple form	V-ing form
I mustn't swear you mustn't swear she mustn't swear we mustn't swear you mustn't swear they mustn't swear	I mustn't be swearing you mustn't be swearing she mustn't be swearing we mustn't be swearing you mustn't be swearing they mustn't be swearing
Perfect	V-ing perfect
I mustn't have sworn you mustn't have sworn she mustn't have sworn we mustn't have sworn you mustn't have sworn they mustn't have sworn	I mustn't have been swearing you mustn't have been swearing she mustn't have been swearing we mustn't have been swearing you mustn't have been swearing they mustn't have been swearing

Interrogative form

Simple form	V-ing form
must I swear? must you swear? must she swear? must we swear? must you swear? must they swear?	must I be swearing? must you be swearing? must she be swearing? must we be swearing? must you be swearing? must they be swearing?
Perfect	V-ing perfect
must I have sworn? must you have sworn? must she have sworn? must we have sworn? must you have sworn? must they have sworn?	must I have been swearing? must you have been swearing? must she have been swearing? must we have been swearing? must you have been swearing? must they have been swearing?

Interro-negative form

Simple form	V-ing form
mustn't I swear? mustn't you swear? mustn't she swear? mustn't we swear? mustn't you swear? mustn't they swear?	mustn't I be swearing? mustn't you be swearing? mustn't she be swearing? mustn't we be swearing? mustn't you be swearing? mustn't they be swearing?
Perfect	V-ing perfect
mustn't I have sworn? mustn't you have sworn? mustn't she have sworn? mustn't we have sworn? mustn't you have sworn? mustn't they have sworn?	mustn't I have been swearing? mustn't you have been swearing? mustn't she have been swearing? mustn't we have been swearing? mustn't you have been swearing? mustn't they have been swearing?