must push
Regular verb: push - pushed- pushed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must push
you must push
she must push
we must push
you must push
they must push 	I must be pushing
you must be pushing
she must be pushing
we must be pushing
you must be pushing
they must be pushing	I must have pushed
you must have pushed
she must have pushed
we must have pushed
you must have pushed
they must have pushed	I must have been pushing
you must have been pushing
she must have been pushing
we must have been pushing
you must have been pushing
they must have been pushing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not push
you must not push
she must not push
we must not push
you must not push
they must not push 	I must not be pushing
you must not be pushing
she must not be pushing
we must not be pushing
you must not be pushing
they must not be pushing	I must not have pushed
you must not have pushed
she must not have pushed
we must not have pushed
you must not have pushed
they must not have pushed	I must not have been pushing
you must not have been pushing
she must not have been pushing
we must not have been pushing
you must not have been pushing
they must not have been pushing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I push?
must you push?
must she push?
must we push?
must you push?
must they push? 	must I be pushing?
must you be pushing?
must she be pushing?
must we be pushing?
must you be pushing?
must they be pushing? 	must I have pushed?
must you have pushed?
must she have pushed?
must we have pushed?
must you have pushed?
must they have pushed? 	must I have been pushing?
must you have been pushing?
must she have been pushing?
must we have been pushing?
must you have been pushing?
must they have been pushing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not push?
must you not push?
must she not push?
must we not push?
must you not push?
must they not push? 	must I not be pushing?
must you not be pushing?
must she not be pushing?
must we not be pushing?
must you not be pushing?
must they not be pushing? 	must I not have pushed?
must you not have pushed?
must she not have pushed?
must we not have pushed?
must you not have pushed?
must they not have pushed? 	must I not have been pushing?
must you not have been pushing?
must she not have been pushing?
must we not have been pushing?
must you not have been pushing?
must they not have been pushing?