must dapple
Regular verb: dapple - dappled- dappled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must dapple
you must dapple
she must dapple
we must dapple
you must dapple
they must dapple 	I must be dappling
you must be dappling
she must be dappling
we must be dappling
you must be dappling
they must be dappling	I must have dappled
you must have dappled
she must have dappled
we must have dappled
you must have dappled
they must have dappled	I must have been dappling
you must have been dappling
she must have been dappling
we must have been dappling
you must have been dappling
they must have been dappling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't dapple
you mustn't dapple
she mustn't dapple
we mustn't dapple
you mustn't dapple
they mustn't dapple 	I mustn't be dappling
you mustn't be dappling
she mustn't be dappling
we mustn't be dappling
you mustn't be dappling
they mustn't be dappling	I mustn't have dappled
you mustn't have dappled
she mustn't have dappled
we mustn't have dappled
you mustn't have dappled
they mustn't have dappled	I mustn't have been dappling
you mustn't have been dappling
she mustn't have been dappling
we mustn't have been dappling
you mustn't have been dappling
they mustn't have been dappling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I dapple?
must you dapple?
must she dapple?
must we dapple?
must you dapple?
must they dapple? 	must I be dappling?
must you be dappling?
must she be dappling?
must we be dappling?
must you be dappling?
must they be dappling? 	must I have dappled?
must you have dappled?
must she have dappled?
must we have dappled?
must you have dappled?
must they have dappled? 	must I have been dappling?
must you have been dappling?
must she have been dappling?
must we have been dappling?
must you have been dappling?
must they have been dappling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I dapple?
mustn't you dapple?
mustn't she dapple?
mustn't we dapple?
mustn't you dapple?
mustn't they dapple? 	mustn't I be dappling?
mustn't you be dappling?
mustn't she be dappling?
mustn't we be dappling?
mustn't you be dappling?
mustn't they be dappling? 	mustn't I have dappled?
mustn't you have dappled?
mustn't she have dappled?
mustn't we have dappled?
mustn't you have dappled?
mustn't they have dappled? 	mustn't I have been dappling?
mustn't you have been dappling?
mustn't she have been dappling?
mustn't we have been dappling?
mustn't you have been dappling?
mustn't they have been dappling?