English verb conjugation
MUST SPILE

Regular verb: spile - spiled - spiled

Affirmation

Simple form	V-ing form
I must spile you must spile he must spile we must spile you must spile they must spile	I must be spiling you must be spiling he must be spiling we must be spiling you must be spiling they must be spiling
Perfect	V-ing perfect
I must have spiled you must have spiled he must have spiled we must have spiled you must have spiled they must have spiled	I must have been spiling you must have been spiling he must have been spiling we must have been spiling you must have been spiling they must have been spiling

Negation

Simple form	V-ing form
I must not spile you must not spile he must not spile we must not spile you must not spile they must not spile	I must not be spiling you must not be spiling he must not be spiling we must not be spiling you must not be spiling they must not be spiling
Perfect	V-ing perfect
I must not have spiled you must not have spiled he must not have spiled we must not have spiled you must not have spiled they must not have spiled	I must not have been spiling you must not have been spiling he must not have been spiling we must not have been spiling you must not have been spiling they must not have been spiling

Interrogative form

Simple form	V-ing form
must I spile? must you spile? must he spile? must we spile? must you spile? must they spile?	must I be spiling? must you be spiling? must he be spiling? must we be spiling? must you be spiling? must they be spiling?
Perfect	V-ing perfect
must I have spiled? must you have spiled? must he have spiled? must we have spiled? must you have spiled? must they have spiled?	must I have been spiling? must you have been spiling? must he have been spiling? must we have been spiling? must you have been spiling? must they have been spiling?

Interro-negative form

Simple form	V-ing form
must I not spile? must you not spile? must he not spile? must we not spile? must you not spile? must they not spile?	must I not be spiling? must you not be spiling? must he not be spiling? must we not be spiling? must you not be spiling? must they not be spiling?
Perfect	V-ing perfect
must I not have spiled? must you not have spiled? must he not have spiled? must we not have spiled? must you not have spiled? must they not have spiled?	must I not have been spiling? must you not have been spiling? must he not have been spiling? must we not have been spiling? must you not have been spiling? must they not have been spiling?