must switchback
Verbo regolare: switchback - switchbacked- switchbacked

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must switchback
you must switchback
she must switchback
we must switchback
you must switchback
they must switchback 	I must be switchbacking
you must be switchbacking
she must be switchbacking
we must be switchbacking
you must be switchbacking
they must be switchbacking	I must have switchbacked
you must have switchbacked
she must have switchbacked
we must have switchbacked
you must have switchbacked
they must have switchbacked	I must have been switchbacking
you must have been switchbacking
she must have been switchbacking
we must have been switchbacking
you must have been switchbacking
they must have been switchbacking	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must not switchback
you must not switchback
she must not switchback
we must not switchback
you must not switchback
they must not switchback 	I must not be switchbacking
you must not be switchbacking
she must not be switchbacking
we must not be switchbacking
you must not be switchbacking
they must not be switchbacking	I must not have switchbacked
you must not have switchbacked
she must not have switchbacked
we must not have switchbacked
you must not have switchbacked
they must not have switchbacked	I must not have been switchbacking
you must not have been switchbacking
she must not have been switchbacking
we must not have been switchbacking
you must not have been switchbacking
they must not have been switchbacking	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I switchback?
must you switchback?
must she switchback?
must we switchback?
must you switchback?
must they switchback? 	must I be switchbacking?
must you be switchbacking?
must she be switchbacking?
must we be switchbacking?
must you be switchbacking?
must they be switchbacking? 	must I have switchbacked?
must you have switchbacked?
must she have switchbacked?
must we have switchbacked?
must you have switchbacked?
must they have switchbacked? 	must I have been switchbacking?
must you have been switchbacking?
must she have been switchbacking?
must we have been switchbacking?
must you have been switchbacking?
must they have been switchbacking? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I not switchback?
must you not switchback?
must she not switchback?
must we not switchback?
must you not switchback?
must they not switchback? 	must I not be switchbacking?
must you not be switchbacking?
must she not be switchbacking?
must we not be switchbacking?
must you not be switchbacking?
must they not be switchbacking? 	must I not have switchbacked?
must you not have switchbacked?
must she not have switchbacked?
must we not have switchbacked?
must you not have switchbacked?
must they not have switchbacked? 	must I not have been switchbacking?
must you not have been switchbacking?
must she not have been switchbacking?
must we not have been switchbacking?
must you not have been switchbacking?
must they not have been switchbacking?