must abuse
Regular verb: abuse - abused- abused

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must abuse
you must abuse
she must abuse
we must abuse
you must abuse
they must abuse 	I must be abusing
you must be abusing
she must be abusing
we must be abusing
you must be abusing
they must be abusing	I must have abused
you must have abused
she must have abused
we must have abused
you must have abused
they must have abused	I must have been abusing
you must have been abusing
she must have been abusing
we must have been abusing
you must have been abusing
they must have been abusing	

Negation 	
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I must not abuse
you must not abuse
she must not abuse
we must not abuse
you must not abuse
they must not abuse 	I must not be abusing
you must not be abusing
she must not be abusing
we must not be abusing
you must not be abusing
they must not be abusing	I must not have abused
you must not have abused
she must not have abused
we must not have abused
you must not have abused
they must not have abused	I must not have been abusing
you must not have been abusing
she must not have been abusing
we must not have been abusing
you must not have been abusing
they must not have been abusing	

Interrogative form 	
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must I abuse?
must you abuse?
must she abuse?
must we abuse?
must you abuse?
must they abuse? 	must I be abusing?
must you be abusing?
must she be abusing?
must we be abusing?
must you be abusing?
must they be abusing? 	must I have abused?
must you have abused?
must she have abused?
must we have abused?
must you have abused?
must they have abused? 	must I have been abusing?
must you have been abusing?
must she have been abusing?
must we have been abusing?
must you have been abusing?
must they have been abusing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not abuse?
must you not abuse?
must she not abuse?
must we not abuse?
must you not abuse?
must they not abuse? 	must I not be abusing?
must you not be abusing?
must she not be abusing?
must we not be abusing?
must you not be abusing?
must they not be abusing? 	must I not have abused?
must you not have abused?
must she not have abused?
must we not have abused?
must you not have abused?
must they not have abused? 	must I not have been abusing?
must you not have been abusing?
must she not have been abusing?
must we not have been abusing?
must you not have been abusing?
must they not have been abusing?