Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I might knock knock you might knock knock she might knock knock we might knock knock you might knock knock they might knock knock
V-ing form
I might be knock knocking you might be knock knocking she might be knock knocking we might be knock knocking you might be knock knocking they might be knock knocking
Perfect
I might have knock knocked you might have knock knocked she might have knock knocked we might have knock knocked you might have knock knocked they might have knock knocked
V-ing perfect
I might have been knock knocking you might have been knock knocking she might have been knock knocking we might have been knock knocking you might have been knock knocking they might have been knock knocking
Negation
Simple form
I mightn't knock knock you mightn't knock knock she mightn't knock knock we mightn't knock knock you mightn't knock knock they mightn't knock knock
V-ing form
I mightn't be knock knocking you mightn't be knock knocking she mightn't be knock knocking we mightn't be knock knocking you mightn't be knock knocking they mightn't be knock knocking
Perfect
I mightn't have knock knocked you mightn't have knock knocked she mightn't have knock knocked we mightn't have knock knocked you mightn't have knock knocked they mightn't have knock knocked
V-ing perfect
I mightn't have been knock knocking you mightn't have been knock knocking she mightn't have been knock knocking we mightn't have been knock knocking you mightn't have been knock knocking they mightn't have been knock knocking
Interrogative form
Simple form
might I knock knock? might you knock knock? might she knock knock? might we knock knock? might you knock knock? might they knock knock?
V-ing form
might I be knock knocking? might you be knock knocking? might she be knock knocking? might we be knock knocking? might you be knock knocking? might they be knock knocking?
Perfect
might I have knock knocked? might you have knock knocked? might she have knock knocked? might we have knock knocked? might you have knock knocked? might they have knock knocked?
V-ing perfect
might I have been knock knocking? might you have been knock knocking? might she have been knock knocking? might we have been knock knocking? might you have been knock knocking? might they have been knock knocking?
Interro-negative form
Simple form
mightn't I knock knock? mightn't you knock knock? mightn't she knock knock? mightn't we knock knock? mightn't you knock knock? mightn't they knock knock?
V-ing form
mightn't I be knock knocking? mightn't you be knock knocking? mightn't she be knock knocking? mightn't we be knock knocking? mightn't you be knock knocking? mightn't they be knock knocking?
Perfect
mightn't I have knock knocked? mightn't you have knock knocked? mightn't she have knock knocked? mightn't we have knock knocked? mightn't you have knock knocked? mightn't they have knock knocked?
V-ing perfect
mightn't I have been knock knocking? mightn't you have been knock knocking? mightn't she have been knock knocking? mightn't we have been knock knocking? mightn't you have been knock knocking? mightn't they have been knock knocking?