Regular verb: backstop - backstoped - backstoped
Simple form | V-ing form |
I must backstop you must backstop he must backstop we must backstop you must backstop they must backstop | I must be backstoping you must be backstoping he must be backstoping we must be backstoping you must be backstoping they must be backstoping |
Perfect | V-ing perfect |
I must have backstoped you must have backstoped he must have backstoped we must have backstoped you must have backstoped they must have backstoped | I must have been backstoping you must have been backstoping he must have been backstoping we must have been backstoping you must have been backstoping they must have been backstoping |
Simple form | V-ing form |
I mustn't backstop you mustn't backstop he mustn't backstop we mustn't backstop you mustn't backstop they mustn't backstop | I mustn't be backstoping you mustn't be backstoping he mustn't be backstoping we mustn't be backstoping you mustn't be backstoping they mustn't be backstoping |
Perfect | V-ing perfect |
I mustn't have backstoped you mustn't have backstoped he mustn't have backstoped we mustn't have backstoped you mustn't have backstoped they mustn't have backstoped | I mustn't have been backstoping you mustn't have been backstoping he mustn't have been backstoping we mustn't have been backstoping you mustn't have been backstoping they mustn't have been backstoping |
Simple form | V-ing form |
must I backstop? must you backstop? must he backstop? must we backstop? must you backstop? must they backstop? | must I be backstoping? must you be backstoping? must he be backstoping? must we be backstoping? must you be backstoping? must they be backstoping? |
Perfect | V-ing perfect |
must I have backstoped? must you have backstoped? must he have backstoped? must we have backstoped? must you have backstoped? must they have backstoped? | must I have been backstoping? must you have been backstoping? must he have been backstoping? must we have been backstoping? must you have been backstoping? must they have been backstoping? |
Simple form | V-ing form |
mustn't I backstop? mustn't you backstop? mustn't he backstop? mustn't we backstop? mustn't you backstop? mustn't they backstop? | mustn't I be backstoping? mustn't you be backstoping? mustn't he be backstoping? mustn't we be backstoping? mustn't you be backstoping? mustn't they be backstoping? |
Perfect | V-ing perfect |
mustn't I have backstoped? mustn't you have backstoped? mustn't he have backstoped? mustn't we have backstoped? mustn't you have backstoped? mustn't they have backstoped? | mustn't I have been backstoping? mustn't you have been backstoping? mustn't he have been backstoping? mustn't we have been backstoping? mustn't you have been backstoping? mustn't they have been backstoping? |