English verb conjugation
MUST STING

Irregular verb: sting - stung - stung

Affirmation

Simple form	V-ing form
I must sting you must sting he must sting we must sting you must sting they must sting	I must be stinging you must be stinging he must be stinging we must be stinging you must be stinging they must be stinging
Perfect	V-ing perfect
I must have stung you must have stung he must have stung we must have stung you must have stung they must have stung	I must have been stinging you must have been stinging he must have been stinging we must have been stinging you must have been stinging they must have been stinging

Negation

Simple form	V-ing form
I must not sting you must not sting he must not sting we must not sting you must not sting they must not sting	I must not be stinging you must not be stinging he must not be stinging we must not be stinging you must not be stinging they must not be stinging
Perfect	V-ing perfect
I must not have stung you must not have stung he must not have stung we must not have stung you must not have stung they must not have stung	I must not have been stinging you must not have been stinging he must not have been stinging we must not have been stinging you must not have been stinging they must not have been stinging

Interrogative form

Simple form	V-ing form
must I sting? must you sting? must he sting? must we sting? must you sting? must they sting?	must I be stinging? must you be stinging? must he be stinging? must we be stinging? must you be stinging? must they be stinging?
Perfect	V-ing perfect
must I have stung? must you have stung? must he have stung? must we have stung? must you have stung? must they have stung?	must I have been stinging? must you have been stinging? must he have been stinging? must we have been stinging? must you have been stinging? must they have been stinging?

Interro-negative form

Simple form	V-ing form
must I not sting? must you not sting? must he not sting? must we not sting? must you not sting? must they not sting?	must I not be stinging? must you not be stinging? must he not be stinging? must we not be stinging? must you not be stinging? must they not be stinging?
Perfect	V-ing perfect
must I not have stung? must you not have stung? must he not have stung? must we not have stung? must you not have stung? must they not have stung?	must I not have been stinging? must you not have been stinging? must he not have been stinging? must we not have been stinging? must you not have been stinging? must they not have been stinging?