must rosin
Regular verb: rosin - rosined- rosined

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must rosin
you must rosin
he must rosin
we must rosin
you must rosin
they must rosin 	I must be rosining
you must be rosining
he must be rosining
we must be rosining
you must be rosining
they must be rosining	I must have rosined
you must have rosined
he must have rosined
we must have rosined
you must have rosined
they must have rosined	I must have been rosining
you must have been rosining
he must have been rosining
we must have been rosining
you must have been rosining
they must have been rosining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not rosin
you must not rosin
he must not rosin
we must not rosin
you must not rosin
they must not rosin 	I must not be rosining
you must not be rosining
he must not be rosining
we must not be rosining
you must not be rosining
they must not be rosining	I must not have rosined
you must not have rosined
he must not have rosined
we must not have rosined
you must not have rosined
they must not have rosined	I must not have been rosining
you must not have been rosining
he must not have been rosining
we must not have been rosining
you must not have been rosining
they must not have been rosining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I rosin?
must you rosin?
must he rosin?
must we rosin?
must you rosin?
must they rosin? 	must I be rosining?
must you be rosining?
must he be rosining?
must we be rosining?
must you be rosining?
must they be rosining? 	must I have rosined?
must you have rosined?
must he have rosined?
must we have rosined?
must you have rosined?
must they have rosined? 	must I have been rosining?
must you have been rosining?
must he have been rosining?
must we have been rosining?
must you have been rosining?
must they have been rosining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not rosin?
must you not rosin?
must he not rosin?
must we not rosin?
must you not rosin?
must they not rosin? 	must I not be rosining?
must you not be rosining?
must he not be rosining?
must we not be rosining?
must you not be rosining?
must they not be rosining? 	must I not have rosined?
must you not have rosined?
must he not have rosined?
must we not have rosined?
must you not have rosined?
must they not have rosined? 	must I not have been rosining?
must you not have been rosining?
must he not have been rosining?
must we not have been rosining?
must you not have been rosining?
must they not have been rosining?