must code
Regular verb: code - coded- coded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must code
you must code
she must code
we must code
you must code
they must code 	I must be coding
you must be coding
she must be coding
we must be coding
you must be coding
they must be coding	I must have coded
you must have coded
she must have coded
we must have coded
you must have coded
they must have coded	I must have been coding
you must have been coding
she must have been coding
we must have been coding
you must have been coding
they must have been coding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not code
you must not code
she must not code
we must not code
you must not code
they must not code 	I must not be coding
you must not be coding
she must not be coding
we must not be coding
you must not be coding
they must not be coding	I must not have coded
you must not have coded
she must not have coded
we must not have coded
you must not have coded
they must not have coded	I must not have been coding
you must not have been coding
she must not have been coding
we must not have been coding
you must not have been coding
they must not have been coding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I code?
must you code?
must she code?
must we code?
must you code?
must they code? 	must I be coding?
must you be coding?
must she be coding?
must we be coding?
must you be coding?
must they be coding? 	must I have coded?
must you have coded?
must she have coded?
must we have coded?
must you have coded?
must they have coded? 	must I have been coding?
must you have been coding?
must she have been coding?
must we have been coding?
must you have been coding?
must they have been coding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not code?
must you not code?
must she not code?
must we not code?
must you not code?
must they not code? 	must I not be coding?
must you not be coding?
must she not be coding?
must we not be coding?
must you not be coding?
must they not be coding? 	must I not have coded?
must you not have coded?
must she not have coded?
must we not have coded?
must you not have coded?
must they not have coded? 	must I not have been coding?
must you not have been coding?
must she not have been coding?
must we not have been coding?
must you not have been coding?
must they not have been coding?