must lemmatise
Verbo regular: lemmatise - lemmatised- lemmatised

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must lemmatise
you must lemmatise
he must lemmatise
we must lemmatise
you must lemmatise
they must lemmatise 	I must be lemmatising
you must be lemmatising
he must be lemmatising
we must be lemmatising
you must be lemmatising
they must be lemmatising	I must have lemmatised
you must have lemmatised
he must have lemmatised
we must have lemmatised
you must have lemmatised
they must have lemmatised	I must have been lemmatising
you must have been lemmatising
he must have been lemmatising
we must have been lemmatising
you must have been lemmatising
they must have been lemmatising	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not lemmatise
you must not lemmatise
he must not lemmatise
we must not lemmatise
you must not lemmatise
they must not lemmatise 	I must not be lemmatising
you must not be lemmatising
he must not be lemmatising
we must not be lemmatising
you must not be lemmatising
they must not be lemmatising	I must not have lemmatised
you must not have lemmatised
he must not have lemmatised
we must not have lemmatised
you must not have lemmatised
they must not have lemmatised	I must not have been lemmatising
you must not have been lemmatising
he must not have been lemmatising
we must not have been lemmatising
you must not have been lemmatising
they must not have been lemmatising	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I lemmatise?
must you lemmatise?
must he lemmatise?
must we lemmatise?
must you lemmatise?
must they lemmatise? 	must I be lemmatising?
must you be lemmatising?
must he be lemmatising?
must we be lemmatising?
must you be lemmatising?
must they be lemmatising? 	must I have lemmatised?
must you have lemmatised?
must he have lemmatised?
must we have lemmatised?
must you have lemmatised?
must they have lemmatised? 	must I have been lemmatising?
must you have been lemmatising?
must he have been lemmatising?
must we have been lemmatising?
must you have been lemmatising?
must they have been lemmatising? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not lemmatise?
must you not lemmatise?
must he not lemmatise?
must we not lemmatise?
must you not lemmatise?
must they not lemmatise? 	must I not be lemmatising?
must you not be lemmatising?
must he not be lemmatising?
must we not be lemmatising?
must you not be lemmatising?
must they not be lemmatising? 	must I not have lemmatised?
must you not have lemmatised?
must he not have lemmatised?
must we not have lemmatised?
must you not have lemmatised?
must they not have lemmatised? 	must I not have been lemmatising?
must you not have been lemmatising?
must he not have been lemmatising?
must we not have been lemmatising?
must you not have been lemmatising?
must they not have been lemmatising?