must cling
Verbo irregular: cling - clung- clung

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must cling
you must cling
she must cling
we must cling
you must cling
they must cling 	I must be clinging
you must be clinging
she must be clinging
we must be clinging
you must be clinging
they must be clinging	I must have clung
you must have clung
she must have clung
we must have clung
you must have clung
they must have clung	I must have been clinging
you must have been clinging
she must have been clinging
we must have been clinging
you must have been clinging
they must have been clinging	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not cling
you must not cling
she must not cling
we must not cling
you must not cling
they must not cling 	I must not be clinging
you must not be clinging
she must not be clinging
we must not be clinging
you must not be clinging
they must not be clinging	I must not have clung
you must not have clung
she must not have clung
we must not have clung
you must not have clung
they must not have clung	I must not have been clinging
you must not have been clinging
she must not have been clinging
we must not have been clinging
you must not have been clinging
they must not have been clinging	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I cling?
must you cling?
must she cling?
must we cling?
must you cling?
must they cling? 	must I be clinging?
must you be clinging?
must she be clinging?
must we be clinging?
must you be clinging?
must they be clinging? 	must I have clung?
must you have clung?
must she have clung?
must we have clung?
must you have clung?
must they have clung? 	must I have been clinging?
must you have been clinging?
must she have been clinging?
must we have been clinging?
must you have been clinging?
must they have been clinging? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not cling?
must you not cling?
must she not cling?
must we not cling?
must you not cling?
must they not cling? 	must I not be clinging?
must you not be clinging?
must she not be clinging?
must we not be clinging?
must you not be clinging?
must they not be clinging? 	must I not have clung?
must you not have clung?
must she not have clung?
must we not have clung?
must you not have clung?
must they not have clung? 	must I not have been clinging?
must you not have been clinging?
must she not have been clinging?
must we not have been clinging?
must you not have been clinging?
must they not have been clinging?