must uncock
Regular verb: uncock - uncocked- uncocked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must uncock
you must uncock
she must uncock
we must uncock
you must uncock
they must uncock 	I must be uncocking
you must be uncocking
she must be uncocking
we must be uncocking
you must be uncocking
they must be uncocking	I must have uncocked
you must have uncocked
she must have uncocked
we must have uncocked
you must have uncocked
they must have uncocked	I must have been uncocking
you must have been uncocking
she must have been uncocking
we must have been uncocking
you must have been uncocking
they must have been uncocking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not uncock
you must not uncock
she must not uncock
we must not uncock
you must not uncock
they must not uncock 	I must not be uncocking
you must not be uncocking
she must not be uncocking
we must not be uncocking
you must not be uncocking
they must not be uncocking	I must not have uncocked
you must not have uncocked
she must not have uncocked
we must not have uncocked
you must not have uncocked
they must not have uncocked	I must not have been uncocking
you must not have been uncocking
she must not have been uncocking
we must not have been uncocking
you must not have been uncocking
they must not have been uncocking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I uncock?
must you uncock?
must she uncock?
must we uncock?
must you uncock?
must they uncock? 	must I be uncocking?
must you be uncocking?
must she be uncocking?
must we be uncocking?
must you be uncocking?
must they be uncocking? 	must I have uncocked?
must you have uncocked?
must she have uncocked?
must we have uncocked?
must you have uncocked?
must they have uncocked? 	must I have been uncocking?
must you have been uncocking?
must she have been uncocking?
must we have been uncocking?
must you have been uncocking?
must they have been uncocking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not uncock?
must you not uncock?
must she not uncock?
must we not uncock?
must you not uncock?
must they not uncock? 	must I not be uncocking?
must you not be uncocking?
must she not be uncocking?
must we not be uncocking?
must you not be uncocking?
must they not be uncocking? 	must I not have uncocked?
must you not have uncocked?
must she not have uncocked?
must we not have uncocked?
must you not have uncocked?
must they not have uncocked? 	must I not have been uncocking?
must you not have been uncocking?
must she not have been uncocking?
must we not have been uncocking?
must you not have been uncocking?
must they not have been uncocking?