may tamper
Regular verb: tamper - tampered- tampered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may tamper
you may tamper
he may tamper
we may tamper
you may tamper
they may tamper 	I may be tampering
you may be tampering
he may be tampering
we may be tampering
you may be tampering
they may be tampering	I may have tampered
you may have tampered
he may have tampered
we may have tampered
you may have tampered
they may have tampered	I may have been tampering
you may have been tampering
he may have been tampering
we may have been tampering
you may have been tampering
they may have been tampering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't tamper
you mayn't tamper
he mayn't tamper
we mayn't tamper
you mayn't tamper
they mayn't tamper 	I mayn't be tampering
you mayn't be tampering
he mayn't be tampering
we mayn't be tampering
you mayn't be tampering
they mayn't be tampering	I mayn't have tampered
you mayn't have tampered
he mayn't have tampered
we mayn't have tampered
you mayn't have tampered
they mayn't have tampered	I mayn't have been tampering
you mayn't have been tampering
he mayn't have been tampering
we mayn't have been tampering
you mayn't have been tampering
they mayn't have been tampering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I tamper?
may you tamper?
may he tamper?
may we tamper?
may you tamper?
may they tamper? 	may I be tampering?
may you be tampering?
may he be tampering?
may we be tampering?
may you be tampering?
may they be tampering? 	may I have tampered?
may you have tampered?
may he have tampered?
may we have tampered?
may you have tampered?
may they have tampered? 	may I have been tampering?
may you have been tampering?
may he have been tampering?
may we have been tampering?
may you have been tampering?
may they have been tampering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I tamper?
mayn't you tamper?
mayn't he tamper?
mayn't we tamper?
mayn't you tamper?
mayn't they tamper? 	mayn't I be tampering?
mayn't you be tampering?
mayn't he be tampering?
mayn't we be tampering?
mayn't you be tampering?
mayn't they be tampering? 	mayn't I have tampered?
mayn't you have tampered?
mayn't he have tampered?
mayn't we have tampered?
mayn't you have tampered?
mayn't they have tampered? 	mayn't I have been tampering?
mayn't you have been tampering?
mayn't he have been tampering?
mayn't we have been tampering?
mayn't you have been tampering?
mayn't they have been tampering?