must spire
Regular verb: spire - spired- spired

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must spire
you must spire
she must spire
we must spire
you must spire
they must spire 	I must be spiring
you must be spiring
she must be spiring
we must be spiring
you must be spiring
they must be spiring	I must have spired
you must have spired
she must have spired
we must have spired
you must have spired
they must have spired	I must have been spiring
you must have been spiring
she must have been spiring
we must have been spiring
you must have been spiring
they must have been spiring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't spire
you mustn't spire
she mustn't spire
we mustn't spire
you mustn't spire
they mustn't spire 	I mustn't be spiring
you mustn't be spiring
she mustn't be spiring
we mustn't be spiring
you mustn't be spiring
they mustn't be spiring	I mustn't have spired
you mustn't have spired
she mustn't have spired
we mustn't have spired
you mustn't have spired
they mustn't have spired	I mustn't have been spiring
you mustn't have been spiring
she mustn't have been spiring
we mustn't have been spiring
you mustn't have been spiring
they mustn't have been spiring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I spire?
must you spire?
must she spire?
must we spire?
must you spire?
must they spire? 	must I be spiring?
must you be spiring?
must she be spiring?
must we be spiring?
must you be spiring?
must they be spiring? 	must I have spired?
must you have spired?
must she have spired?
must we have spired?
must you have spired?
must they have spired? 	must I have been spiring?
must you have been spiring?
must she have been spiring?
must we have been spiring?
must you have been spiring?
must they have been spiring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I spire?
mustn't you spire?
mustn't she spire?
mustn't we spire?
mustn't you spire?
mustn't they spire? 	mustn't I be spiring?
mustn't you be spiring?
mustn't she be spiring?
mustn't we be spiring?
mustn't you be spiring?
mustn't they be spiring? 	mustn't I have spired?
mustn't you have spired?
mustn't she have spired?
mustn't we have spired?
mustn't you have spired?
mustn't they have spired? 	mustn't I have been spiring?
mustn't you have been spiring?
mustn't she have been spiring?
mustn't we have been spiring?
mustn't you have been spiring?
mustn't they have been spiring?