English verb conjugation
MUST SPIKE

Regular verb: spike - spiked - spiked

Affirmation

Simple form	V-ing form
I must spike you must spike he must spike we must spike you must spike they must spike	I must be spiking you must be spiking he must be spiking we must be spiking you must be spiking they must be spiking
Perfect	V-ing perfect
I must have spiked you must have spiked he must have spiked we must have spiked you must have spiked they must have spiked	I must have been spiking you must have been spiking he must have been spiking we must have been spiking you must have been spiking they must have been spiking

Negation

Simple form	V-ing form
I mustn't spike you mustn't spike he mustn't spike we mustn't spike you mustn't spike they mustn't spike	I mustn't be spiking you mustn't be spiking he mustn't be spiking we mustn't be spiking you mustn't be spiking they mustn't be spiking
Perfect	V-ing perfect
I mustn't have spiked you mustn't have spiked he mustn't have spiked we mustn't have spiked you mustn't have spiked they mustn't have spiked	I mustn't have been spiking you mustn't have been spiking he mustn't have been spiking we mustn't have been spiking you mustn't have been spiking they mustn't have been spiking

Interrogative form

Simple form	V-ing form
must I spike? must you spike? must he spike? must we spike? must you spike? must they spike?	must I be spiking? must you be spiking? must he be spiking? must we be spiking? must you be spiking? must they be spiking?
Perfect	V-ing perfect
must I have spiked? must you have spiked? must he have spiked? must we have spiked? must you have spiked? must they have spiked?	must I have been spiking? must you have been spiking? must he have been spiking? must we have been spiking? must you have been spiking? must they have been spiking?

Interro-negative form

Simple form	V-ing form
mustn't I spike? mustn't you spike? mustn't he spike? mustn't we spike? mustn't you spike? mustn't they spike?	mustn't I be spiking? mustn't you be spiking? mustn't he be spiking? mustn't we be spiking? mustn't you be spiking? mustn't they be spiking?
Perfect	V-ing perfect
mustn't I have spiked? mustn't you have spiked? mustn't he have spiked? mustn't we have spiked? mustn't you have spiked? mustn't they have spiked?	mustn't I have been spiking? mustn't you have been spiking? mustn't he have been spiking? mustn't we have been spiking? mustn't you have been spiking? mustn't they have been spiking?