English verb conjugation
MUST OBTRUDE

Regular verb: obtrude - obtruded - obtruded

Affirmation

Simple form	V-ing form
I must obtrude you must obtrude he must obtrude we must obtrude you must obtrude they must obtrude	I must be obtruding you must be obtruding he must be obtruding we must be obtruding you must be obtruding they must be obtruding
Perfect	V-ing perfect
I must have obtruded you must have obtruded he must have obtruded we must have obtruded you must have obtruded they must have obtruded	I must have been obtruding you must have been obtruding he must have been obtruding we must have been obtruding you must have been obtruding they must have been obtruding

Negation

Simple form	V-ing form
I must not obtrude you must not obtrude he must not obtrude we must not obtrude you must not obtrude they must not obtrude	I must not be obtruding you must not be obtruding he must not be obtruding we must not be obtruding you must not be obtruding they must not be obtruding
Perfect	V-ing perfect
I must not have obtruded you must not have obtruded he must not have obtruded we must not have obtruded you must not have obtruded they must not have obtruded	I must not have been obtruding you must not have been obtruding he must not have been obtruding we must not have been obtruding you must not have been obtruding they must not have been obtruding

Interrogative form

Simple form	V-ing form
must I obtrude? must you obtrude? must he obtrude? must we obtrude? must you obtrude? must they obtrude?	must I be obtruding? must you be obtruding? must he be obtruding? must we be obtruding? must you be obtruding? must they be obtruding?
Perfect	V-ing perfect
must I have obtruded? must you have obtruded? must he have obtruded? must we have obtruded? must you have obtruded? must they have obtruded?	must I have been obtruding? must you have been obtruding? must he have been obtruding? must we have been obtruding? must you have been obtruding? must they have been obtruding?

Interro-negative form

Simple form	V-ing form
must I not obtrude? must you not obtrude? must he not obtrude? must we not obtrude? must you not obtrude? must they not obtrude?	must I not be obtruding? must you not be obtruding? must he not be obtruding? must we not be obtruding? must you not be obtruding? must they not be obtruding?
Perfect	V-ing perfect
must I not have obtruded? must you not have obtruded? must he not have obtruded? must we not have obtruded? must you not have obtruded? must they not have obtruded?	must I not have been obtruding? must you not have been obtruding? must he not have been obtruding? must we not have been obtruding? must you not have been obtruding? must they not have been obtruding?