must sow
Irregular verb: sow - sowed- sown, sowed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must sow
you must sow
he must sow
we must sow
you must sow
they must sow 	I must be sowing
you must be sowing
he must be sowing
we must be sowing
you must be sowing
they must be sowing	I must have sown, sowed
you must have sown, sowed
he must have sown, sowed
we must have sown, sowed
you must have sown, sowed
they must have sown, sowed	I must have been sowing
you must have been sowing
he must have been sowing
we must have been sowing
you must have been sowing
they must have been sowing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't sow
you mustn't sow
he mustn't sow
we mustn't sow
you mustn't sow
they mustn't sow 	I mustn't be sowing
you mustn't be sowing
he mustn't be sowing
we mustn't be sowing
you mustn't be sowing
they mustn't be sowing	I mustn't have sown, sowed
you mustn't have sown, sowed
he mustn't have sown, sowed
we mustn't have sown, sowed
you mustn't have sown, sowed
they mustn't have sown, sowed	I mustn't have been sowing
you mustn't have been sowing
he mustn't have been sowing
we mustn't have been sowing
you mustn't have been sowing
they mustn't have been sowing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I sow?
must you sow?
must he sow?
must we sow?
must you sow?
must they sow? 	must I be sowing?
must you be sowing?
must he be sowing?
must we be sowing?
must you be sowing?
must they be sowing? 	must I have sown, sowed?
must you have sown, sowed?
must he have sown, sowed?
must we have sown, sowed?
must you have sown, sowed?
must they have sown, sowed? 	must I have been sowing?
must you have been sowing?
must he have been sowing?
must we have been sowing?
must you have been sowing?
must they have been sowing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I sow?
mustn't you sow?
mustn't he sow?
mustn't we sow?
mustn't you sow?
mustn't they sow? 	mustn't I be sowing?
mustn't you be sowing?
mustn't he be sowing?
mustn't we be sowing?
mustn't you be sowing?
mustn't they be sowing? 	mustn't I have sown, sowed?
mustn't you have sown, sowed?
mustn't he have sown, sowed?
mustn't we have sown, sowed?
mustn't you have sown, sowed?
mustn't they have sown, sowed? 	mustn't I have been sowing?
mustn't you have been sowing?
mustn't he have been sowing?
mustn't we have been sowing?
mustn't you have been sowing?
mustn't they have been sowing?