must spank
Regular verb: spank - spanked- spanked

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