may signal
Regular verb: signal - signalled- signalled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may signal
you may signal
he may signal
we may signal
you may signal
they may signal 	I may be signalling
you may be signalling
he may be signalling
we may be signalling
you may be signalling
they may be signalling	I may have signalled
you may have signalled
he may have signalled
we may have signalled
you may have signalled
they may have signalled	I may have been signalling
you may have been signalling
he may have been signalling
we may have been signalling
you may have been signalling
they may have been signalling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't signal
you mayn't signal
he mayn't signal
we mayn't signal
you mayn't signal
they mayn't signal 	I mayn't be signalling
you mayn't be signalling
he mayn't be signalling
we mayn't be signalling
you mayn't be signalling
they mayn't be signalling	I mayn't have signalled
you mayn't have signalled
he mayn't have signalled
we mayn't have signalled
you mayn't have signalled
they mayn't have signalled	I mayn't have been signalling
you mayn't have been signalling
he mayn't have been signalling
we mayn't have been signalling
you mayn't have been signalling
they mayn't have been signalling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I signal?
may you signal?
may he signal?
may we signal?
may you signal?
may they signal? 	may I be signalling?
may you be signalling?
may he be signalling?
may we be signalling?
may you be signalling?
may they be signalling? 	may I have signalled?
may you have signalled?
may he have signalled?
may we have signalled?
may you have signalled?
may they have signalled? 	may I have been signalling?
may you have been signalling?
may he have been signalling?
may we have been signalling?
may you have been signalling?
may they have been signalling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I signal?
mayn't you signal?
mayn't he signal?
mayn't we signal?
mayn't you signal?
mayn't they signal? 	mayn't I be signalling?
mayn't you be signalling?
mayn't he be signalling?
mayn't we be signalling?
mayn't you be signalling?
mayn't they be signalling? 	mayn't I have signalled?
mayn't you have signalled?
mayn't he have signalled?
mayn't we have signalled?
mayn't you have signalled?
mayn't they have signalled? 	mayn't I have been signalling?
mayn't you have been signalling?
mayn't he have been signalling?
mayn't we have been signalling?
mayn't you have been signalling?
mayn't they have been signalling?