English verb conjugation
MUST STARTLE

Regular verb: startle - startled - startled

Affirmation

Simple form	V-ing form
I must startle you must startle he must startle we must startle you must startle they must startle	I must be startling you must be startling he must be startling we must be startling you must be startling they must be startling
Perfect	V-ing perfect
I must have startled you must have startled he must have startled we must have startled you must have startled they must have startled	I must have been startling you must have been startling he must have been startling we must have been startling you must have been startling they must have been startling

Negation

Simple form	V-ing form
I must not startle you must not startle he must not startle we must not startle you must not startle they must not startle	I must not be startling you must not be startling he must not be startling we must not be startling you must not be startling they must not be startling
Perfect	V-ing perfect
I must not have startled you must not have startled he must not have startled we must not have startled you must not have startled they must not have startled	I must not have been startling you must not have been startling he must not have been startling we must not have been startling you must not have been startling they must not have been startling

Interrogative form

Simple form	V-ing form
must I startle? must you startle? must he startle? must we startle? must you startle? must they startle?	must I be startling? must you be startling? must he be startling? must we be startling? must you be startling? must they be startling?
Perfect	V-ing perfect
must I have startled? must you have startled? must he have startled? must we have startled? must you have startled? must they have startled?	must I have been startling? must you have been startling? must he have been startling? must we have been startling? must you have been startling? must they have been startling?

Interro-negative form

Simple form	V-ing form
must I not startle? must you not startle? must he not startle? must we not startle? must you not startle? must they not startle?	must I not be startling? must you not be startling? must he not be startling? must we not be startling? must you not be startling? must they not be startling?
Perfect	V-ing perfect
must I not have startled? must you not have startled? must he not have startled? must we not have startled? must you not have startled? must they not have startled?	must I not have been startling? must you not have been startling? must he not have been startling? must we not have been startling? must you not have been startling? must they not have been startling?