English verb conjugation
MUST TWIG

Regular verb: twig - twigged - twigged

Affirmation

Simple form	V-ing form
I must twig you must twig he must twig we must twig you must twig they must twig	I must be twigging you must be twigging he must be twigging we must be twigging you must be twigging they must be twigging
Perfect	V-ing perfect
I must have twigged you must have twigged he must have twigged we must have twigged you must have twigged they must have twigged	I must have been twigging you must have been twigging he must have been twigging we must have been twigging you must have been twigging they must have been twigging

Negation

Simple form	V-ing form
I must not twig you must not twig he must not twig we must not twig you must not twig they must not twig	I must not be twigging you must not be twigging he must not be twigging we must not be twigging you must not be twigging they must not be twigging
Perfect	V-ing perfect
I must not have twigged you must not have twigged he must not have twigged we must not have twigged you must not have twigged they must not have twigged	I must not have been twigging you must not have been twigging he must not have been twigging we must not have been twigging you must not have been twigging they must not have been twigging

Interrogative form

Simple form	V-ing form
must I twig? must you twig? must he twig? must we twig? must you twig? must they twig?	must I be twigging? must you be twigging? must he be twigging? must we be twigging? must you be twigging? must they be twigging?
Perfect	V-ing perfect
must I have twigged? must you have twigged? must he have twigged? must we have twigged? must you have twigged? must they have twigged?	must I have been twigging? must you have been twigging? must he have been twigging? must we have been twigging? must you have been twigging? must they have been twigging?

Interro-negative form

Simple form	V-ing form
must I not twig? must you not twig? must he not twig? must we not twig? must you not twig? must they not twig?	must I not be twigging? must you not be twigging? must he not be twigging? must we not be twigging? must you not be twigging? must they not be twigging?
Perfect	V-ing perfect
must I not have twigged? must you not have twigged? must he not have twigged? must we not have twigged? must you not have twigged? must they not have twigged?	must I not have been twigging? must you not have been twigging? must he not have been twigging? must we not have been twigging? must you not have been twigging? must they not have been twigging?