English verb conjugation
MUST SPANK

Regular verb: spank - spanked - spanked

Affirmation

Simple form	V-ing form
I must spank you must spank she must spank we must spank you must spank they must spank	I must be spanking you must be spanking she must be spanking we must be spanking you must be spanking they must be spanking
Perfect	V-ing perfect
I must have spanked you must have spanked she must have spanked we must have spanked you must have spanked they must have spanked	I must have been spanking you must have been spanking she must have been spanking we must have been spanking you must have been spanking they must have been spanking

Negation

Simple form	V-ing form
I mustn't spank you mustn't spank she mustn't spank we mustn't spank you mustn't spank they mustn't spank	I mustn't be spanking you mustn't be spanking she mustn't be spanking we mustn't be spanking you mustn't be spanking they mustn't be spanking
Perfect	V-ing perfect
I mustn't have spanked you mustn't have spanked she mustn't have spanked we mustn't have spanked you mustn't have spanked they mustn't have spanked	I mustn't have been spanking you mustn't have been spanking she mustn't have been spanking we mustn't have been spanking you mustn't have been spanking they mustn't have been spanking

Interrogative form

Simple form	V-ing form
must I spank? must you spank? must she spank? must we spank? must you spank? must they spank?	must I be spanking? must you be spanking? must she be spanking? must we be spanking? must you be spanking? must they be spanking?
Perfect	V-ing perfect
must I have spanked? must you have spanked? must she have spanked? must we have spanked? must you have spanked? must they have spanked?	must I have been spanking? must you have been spanking? must she have been spanking? must we have been spanking? must you have been spanking? must they have been spanking?

Interro-negative form

Simple form	V-ing form
mustn't I spank? mustn't you spank? mustn't she spank? mustn't we spank? mustn't you spank? mustn't they spank?	mustn't I be spanking? mustn't you be spanking? mustn't she be spanking? mustn't we be spanking? mustn't you be spanking? mustn't they be spanking?
Perfect	V-ing perfect
mustn't I have spanked? mustn't you have spanked? mustn't she have spanked? mustn't we have spanked? mustn't you have spanked? mustn't they have spanked?	mustn't I have been spanking? mustn't you have been spanking? mustn't she have been spanking? mustn't we have been spanking? mustn't you have been spanking? mustn't they have been spanking?