must creosote
Regular verb: creosote - creosoted- creosoted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must creosote
you must creosote
he must creosote
we must creosote
you must creosote
they must creosote 	I must be creosoting
you must be creosoting
he must be creosoting
we must be creosoting
you must be creosoting
they must be creosoting	I must have creosoted
you must have creosoted
he must have creosoted
we must have creosoted
you must have creosoted
they must have creosoted	I must have been creosoting
you must have been creosoting
he must have been creosoting
we must have been creosoting
you must have been creosoting
they must have been creosoting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not creosote
you must not creosote
he must not creosote
we must not creosote
you must not creosote
they must not creosote 	I must not be creosoting
you must not be creosoting
he must not be creosoting
we must not be creosoting
you must not be creosoting
they must not be creosoting	I must not have creosoted
you must not have creosoted
he must not have creosoted
we must not have creosoted
you must not have creosoted
they must not have creosoted	I must not have been creosoting
you must not have been creosoting
he must not have been creosoting
we must not have been creosoting
you must not have been creosoting
they must not have been creosoting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I creosote?
must you creosote?
must he creosote?
must we creosote?
must you creosote?
must they creosote? 	must I be creosoting?
must you be creosoting?
must he be creosoting?
must we be creosoting?
must you be creosoting?
must they be creosoting? 	must I have creosoted?
must you have creosoted?
must he have creosoted?
must we have creosoted?
must you have creosoted?
must they have creosoted? 	must I have been creosoting?
must you have been creosoting?
must he have been creosoting?
must we have been creosoting?
must you have been creosoting?
must they have been creosoting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not creosote?
must you not creosote?
must he not creosote?
must we not creosote?
must you not creosote?
must they not creosote? 	must I not be creosoting?
must you not be creosoting?
must he not be creosoting?
must we not be creosoting?
must you not be creosoting?
must they not be creosoting? 	must I not have creosoted?
must you not have creosoted?
must he not have creosoted?
must we not have creosoted?
must you not have creosoted?
must they not have creosoted? 	must I not have been creosoting?
must you not have been creosoting?
must he not have been creosoting?
must we not have been creosoting?
must you not have been creosoting?
must they not have been creosoting?