English verb conjugation
MUST INTERLOCK

Regular verb: interlock - interlocked - interlocked

Affirmation

Simple form	V-ing form
I must interlock you must interlock she must interlock we must interlock you must interlock they must interlock	I must be interlocking you must be interlocking she must be interlocking we must be interlocking you must be interlocking they must be interlocking
Perfect	V-ing perfect
I must have interlocked you must have interlocked she must have interlocked we must have interlocked you must have interlocked they must have interlocked	I must have been interlocking you must have been interlocking she must have been interlocking we must have been interlocking you must have been interlocking they must have been interlocking

Negation

Simple form	V-ing form
I mustn't interlock you mustn't interlock she mustn't interlock we mustn't interlock you mustn't interlock they mustn't interlock	I mustn't be interlocking you mustn't be interlocking she mustn't be interlocking we mustn't be interlocking you mustn't be interlocking they mustn't be interlocking
Perfect	V-ing perfect
I mustn't have interlocked you mustn't have interlocked she mustn't have interlocked we mustn't have interlocked you mustn't have interlocked they mustn't have interlocked	I mustn't have been interlocking you mustn't have been interlocking she mustn't have been interlocking we mustn't have been interlocking you mustn't have been interlocking they mustn't have been interlocking

Interrogative form

Simple form	V-ing form
must I interlock? must you interlock? must she interlock? must we interlock? must you interlock? must they interlock?	must I be interlocking? must you be interlocking? must she be interlocking? must we be interlocking? must you be interlocking? must they be interlocking?
Perfect	V-ing perfect
must I have interlocked? must you have interlocked? must she have interlocked? must we have interlocked? must you have interlocked? must they have interlocked?	must I have been interlocking? must you have been interlocking? must she have been interlocking? must we have been interlocking? must you have been interlocking? must they have been interlocking?

Interro-negative form

Simple form	V-ing form
mustn't I interlock? mustn't you interlock? mustn't she interlock? mustn't we interlock? mustn't you interlock? mustn't they interlock?	mustn't I be interlocking? mustn't you be interlocking? mustn't she be interlocking? mustn't we be interlocking? mustn't you be interlocking? mustn't they be interlocking?
Perfect	V-ing perfect
mustn't I have interlocked? mustn't you have interlocked? mustn't she have interlocked? mustn't we have interlocked? mustn't you have interlocked? mustn't they have interlocked?	mustn't I have been interlocking? mustn't you have been interlocking? mustn't she have been interlocking? mustn't we have been interlocking? mustn't you have been interlocking? mustn't they have been interlocking?