English verb conjugation
MUST SPILE

Regular verb: spile - spiled - spiled

Affirmation

Simple form	V-ing form
I must spile you must spile she must spile we must spile you must spile they must spile	I must be spiling you must be spiling she 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 she 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 she 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 mustn't spile you mustn't spile she mustn't spile we mustn't spile you mustn't spile they mustn't spile	I mustn't be spiling you mustn't be spiling she mustn't be spiling we mustn't be spiling you mustn't be spiling they mustn't be spiling
Perfect	V-ing perfect
I mustn't have spiled you mustn't have spiled she mustn't have spiled we mustn't have spiled you mustn't have spiled they mustn't have spiled	I mustn't have been spiling you mustn't have been spiling she mustn't have been spiling we mustn't have been spiling you mustn't have been spiling they mustn't have been spiling

Interrogative form

Simple form	V-ing form
must I spile? must you spile? must she spile? must we spile? must you spile? must they spile?	must I be spiling? must you be spiling? must she 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 she 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 she 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
mustn't I spile? mustn't you spile? mustn't she spile? mustn't we spile? mustn't you spile? mustn't they spile?	mustn't I be spiling? mustn't you be spiling? mustn't she be spiling? mustn't we be spiling? mustn't you be spiling? mustn't they be spiling?
Perfect	V-ing perfect
mustn't I have spiled? mustn't you have spiled? mustn't she have spiled? mustn't we have spiled? mustn't you have spiled? mustn't they have spiled?	mustn't I have been spiling? mustn't you have been spiling? mustn't she have been spiling? mustn't we have been spiling? mustn't you have been spiling? mustn't they have been spiling?