must cling
Verbo irregular: cling - clung- clung

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must cling
you must cling
he must cling
we must cling
you must cling
they must cling 	I must be clinging
you must be clinging
he must be clinging
we must be clinging
you must be clinging
they must be clinging	I must have clung
you must have clung
he 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
he must have been clinging
we must have been clinging
you must have been clinging
they must have been clinging	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't cling
you mustn't cling
he mustn't cling
we mustn't cling
you mustn't cling
they mustn't cling 	I mustn't be clinging
you mustn't be clinging
he mustn't be clinging
we mustn't be clinging
you mustn't be clinging
they mustn't be clinging	I mustn't have clung
you mustn't have clung
he mustn't have clung
we mustn't have clung
you mustn't have clung
they mustn't have clung	I mustn't have been clinging
you mustn't have been clinging
he mustn't have been clinging
we mustn't have been clinging
you mustn't have been clinging
they mustn't have been clinging	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I cling?
must you cling?
must he cling?
must we cling?
must you cling?
must they cling? 	must I be clinging?
must you be clinging?
must he be clinging?
must we be clinging?
must you be clinging?
must they be clinging? 	must I have clung?
must you have clung?
must he 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 he have been clinging?
must we have been clinging?
must you have been clinging?
must they have been clinging? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I cling?
mustn't you cling?
mustn't he cling?
mustn't we cling?
mustn't you cling?
mustn't they cling? 	mustn't I be clinging?
mustn't you be clinging?
mustn't he be clinging?
mustn't we be clinging?
mustn't you be clinging?
mustn't they be clinging? 	mustn't I have clung?
mustn't you have clung?
mustn't he have clung?
mustn't we have clung?
mustn't you have clung?
mustn't they have clung? 	mustn't I have been clinging?
mustn't you have been clinging?
mustn't he have been clinging?
mustn't we have been clinging?
mustn't you have been clinging?
mustn't they have been clinging?