English verb conjugation
MUST NECK

Regular verb: neck - necked - necked

Affirmation

Simple form	V-ing form
I must neck you must neck he must neck we must neck you must neck they must neck	I must be necking you must be necking he must be necking we must be necking you must be necking they must be necking
Perfect	V-ing perfect
I must have necked you must have necked he must have necked we must have necked you must have necked they must have necked	I must have been necking you must have been necking he must have been necking we must have been necking you must have been necking they must have been necking

Negation

Simple form	V-ing form
I must not neck you must not neck he must not neck we must not neck you must not neck they must not neck	I must not be necking you must not be necking he must not be necking we must not be necking you must not be necking they must not be necking
Perfect	V-ing perfect
I must not have necked you must not have necked he must not have necked we must not have necked you must not have necked they must not have necked	I must not have been necking you must not have been necking he must not have been necking we must not have been necking you must not have been necking they must not have been necking

Interrogative form

Simple form	V-ing form
must I neck? must you neck? must he neck? must we neck? must you neck? must they neck?	must I be necking? must you be necking? must he be necking? must we be necking? must you be necking? must they be necking?
Perfect	V-ing perfect
must I have necked? must you have necked? must he have necked? must we have necked? must you have necked? must they have necked?	must I have been necking? must you have been necking? must he have been necking? must we have been necking? must you have been necking? must they have been necking?

Interro-negative form

Simple form	V-ing form
must I not neck? must you not neck? must he not neck? must we not neck? must you not neck? must they not neck?	must I not be necking? must you not be necking? must he not be necking? must we not be necking? must you not be necking? must they not be necking?
Perfect	V-ing perfect
must I not have necked? must you not have necked? must he not have necked? must we not have necked? must you not have necked? must they not have necked?	must I not have been necking? must you not have been necking? must he not have been necking? must we not have been necking? must you not have been necking? must they not have been necking?