must ring-fence
Verbo regular: ring-fence - ring-fenced- ring-fenced

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must ring-fence
you must ring-fence
he must ring-fence
we must ring-fence
you must ring-fence
they must ring-fence 	I must be ring-fencing
you must be ring-fencing
he must be ring-fencing
we must be ring-fencing
you must be ring-fencing
they must be ring-fencing	I must have ring-fenced
you must have ring-fenced
he must have ring-fenced
we must have ring-fenced
you must have ring-fenced
they must have ring-fenced	I must have been ring-fencing
you must have been ring-fencing
he must have been ring-fencing
we must have been ring-fencing
you must have been ring-fencing
they must have been ring-fencing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not ring-fence
you must not ring-fence
he must not ring-fence
we must not ring-fence
you must not ring-fence
they must not ring-fence 	I must not be ring-fencing
you must not be ring-fencing
he must not be ring-fencing
we must not be ring-fencing
you must not be ring-fencing
they must not be ring-fencing	I must not have ring-fenced
you must not have ring-fenced
he must not have ring-fenced
we must not have ring-fenced
you must not have ring-fenced
they must not have ring-fenced	I must not have been ring-fencing
you must not have been ring-fencing
he must not have been ring-fencing
we must not have been ring-fencing
you must not have been ring-fencing
they must not have been ring-fencing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I ring-fence?
must you ring-fence?
must he ring-fence?
must we ring-fence?
must you ring-fence?
must they ring-fence? 	must I be ring-fencing?
must you be ring-fencing?
must he be ring-fencing?
must we be ring-fencing?
must you be ring-fencing?
must they be ring-fencing? 	must I have ring-fenced?
must you have ring-fenced?
must he have ring-fenced?
must we have ring-fenced?
must you have ring-fenced?
must they have ring-fenced? 	must I have been ring-fencing?
must you have been ring-fencing?
must he have been ring-fencing?
must we have been ring-fencing?
must you have been ring-fencing?
must they have been ring-fencing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not ring-fence?
must you not ring-fence?
must he not ring-fence?
must we not ring-fence?
must you not ring-fence?
must they not ring-fence? 	must I not be ring-fencing?
must you not be ring-fencing?
must he not be ring-fencing?
must we not be ring-fencing?
must you not be ring-fencing?
must they not be ring-fencing? 	must I not have ring-fenced?
must you not have ring-fenced?
must he not have ring-fenced?
must we not have ring-fenced?
must you not have ring-fenced?
must they not have ring-fenced? 	must I not have been ring-fencing?
must you not have been ring-fencing?
must he not have been ring-fencing?
must we not have been ring-fencing?
must you not have been ring-fencing?
must they not have been ring-fencing?