I may backstop you may backstop he may backstop we may backstop you may backstop they may backstop
V-ing form
I may be backstoping you may be backstoping he may be backstoping we may be backstoping you may be backstoping they may be backstoping
Perfect
I may have backstoped you may have backstoped he may have backstoped we may have backstoped you may have backstoped they may have backstoped
V-ing perfect
I may have been backstoping you may have been backstoping he may have been backstoping we may have been backstoping you may have been backstoping they may have been backstoping
Negation
Simple form
I mayn't backstop you mayn't backstop he mayn't backstop we mayn't backstop you mayn't backstop they mayn't backstop
V-ing form
I mayn't be backstoping you mayn't be backstoping he mayn't be backstoping we mayn't be backstoping you mayn't be backstoping they mayn't be backstoping
Perfect
I mayn't have backstoped you mayn't have backstoped he mayn't have backstoped we mayn't have backstoped you mayn't have backstoped they mayn't have backstoped
V-ing perfect
I mayn't have been backstoping you mayn't have been backstoping he mayn't have been backstoping we mayn't have been backstoping you mayn't have been backstoping they mayn't have been backstoping
Interrogative form
Simple form
may I backstop? may you backstop? may he backstop? may we backstop? may you backstop? may they backstop?
V-ing form
may I be backstoping? may you be backstoping? may he be backstoping? may we be backstoping? may you be backstoping? may they be backstoping?
Perfect
may I have backstoped? may you have backstoped? may he have backstoped? may we have backstoped? may you have backstoped? may they have backstoped?
V-ing perfect
may I have been backstoping? may you have been backstoping? may he have been backstoping? may we have been backstoping? may you have been backstoping? may they have been backstoping?
Interro-negative form
Simple form
mayn't I backstop? mayn't you backstop? mayn't he backstop? mayn't we backstop? mayn't you backstop? mayn't they backstop?
V-ing form
mayn't I be backstoping? mayn't you be backstoping? mayn't he be backstoping? mayn't we be backstoping? mayn't you be backstoping? mayn't they be backstoping?
Perfect
mayn't I have backstoped? mayn't you have backstoped? mayn't he have backstoped? mayn't we have backstoped? mayn't you have backstoped? mayn't they have backstoped?
V-ing perfect
mayn't I have been backstoping? mayn't you have been backstoping? mayn't he have been backstoping? mayn't we have been backstoping? mayn't you have been backstoping? mayn't they have been backstoping?