must flop
Regular verb: flop - flopped- flopped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must flop
you must flop
he must flop
we must flop
you must flop
they must flop 	I must be flopping
you must be flopping
he must be flopping
we must be flopping
you must be flopping
they must be flopping	I must have flopped
you must have flopped
he must have flopped
we must have flopped
you must have flopped
they must have flopped	I must have been flopping
you must have been flopping
he must have been flopping
we must have been flopping
you must have been flopping
they must have been flopping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not flop
you must not flop
he must not flop
we must not flop
you must not flop
they must not flop 	I must not be flopping
you must not be flopping
he must not be flopping
we must not be flopping
you must not be flopping
they must not be flopping	I must not have flopped
you must not have flopped
he must not have flopped
we must not have flopped
you must not have flopped
they must not have flopped	I must not have been flopping
you must not have been flopping
he must not have been flopping
we must not have been flopping
you must not have been flopping
they must not have been flopping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I flop?
must you flop?
must he flop?
must we flop?
must you flop?
must they flop? 	must I be flopping?
must you be flopping?
must he be flopping?
must we be flopping?
must you be flopping?
must they be flopping? 	must I have flopped?
must you have flopped?
must he have flopped?
must we have flopped?
must you have flopped?
must they have flopped? 	must I have been flopping?
must you have been flopping?
must he have been flopping?
must we have been flopping?
must you have been flopping?
must they have been flopping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not flop?
must you not flop?
must he not flop?
must we not flop?
must you not flop?
must they not flop? 	must I not be flopping?
must you not be flopping?
must he not be flopping?
must we not be flopping?
must you not be flopping?
must they not be flopping? 	must I not have flopped?
must you not have flopped?
must he not have flopped?
must we not have flopped?
must you not have flopped?
must they not have flopped? 	must I not have been flopping?
must you not have been flopping?
must he not have been flopping?
must we not have been flopping?
must you not have been flopping?
must they not have been flopping?