English verb conjugation
MUST SPIEL

Regular verb: spiel - spieled - spieled

Affirmation

Simple form	V-ing form
I must spiel you must spiel he must spiel we must spiel you must spiel they must spiel	I must be spieling you must be spieling he must be spieling we must be spieling you must be spieling they must be spieling
Perfect	V-ing perfect
I must have spieled you must have spieled he must have spieled we must have spieled you must have spieled they must have spieled	I must have been spieling you must have been spieling he must have been spieling we must have been spieling you must have been spieling they must have been spieling

Negation

Simple form	V-ing form
I must not spiel you must not spiel he must not spiel we must not spiel you must not spiel they must not spiel	I must not be spieling you must not be spieling he must not be spieling we must not be spieling you must not be spieling they must not be spieling
Perfect	V-ing perfect
I must not have spieled you must not have spieled he must not have spieled we must not have spieled you must not have spieled they must not have spieled	I must not have been spieling you must not have been spieling he must not have been spieling we must not have been spieling you must not have been spieling they must not have been spieling

Interrogative form

Simple form	V-ing form
must I spiel? must you spiel? must he spiel? must we spiel? must you spiel? must they spiel?	must I be spieling? must you be spieling? must he be spieling? must we be spieling? must you be spieling? must they be spieling?
Perfect	V-ing perfect
must I have spieled? must you have spieled? must he have spieled? must we have spieled? must you have spieled? must they have spieled?	must I have been spieling? must you have been spieling? must he have been spieling? must we have been spieling? must you have been spieling? must they have been spieling?

Interro-negative form

Simple form	V-ing form
must I not spiel? must you not spiel? must he not spiel? must we not spiel? must you not spiel? must they not spiel?	must I not be spieling? must you not be spieling? must he not be spieling? must we not be spieling? must you not be spieling? must they not be spieling?
Perfect	V-ing perfect
must I not have spieled? must you not have spieled? must he not have spieled? must we not have spieled? must you not have spieled? must they not have spieled?	must I not have been spieling? must you not have been spieling? must he not have been spieling? must we not have been spieling? must you not have been spieling? must they not have been spieling?